stadia surveying problems and solutions
4.93 Special forms used in vernier theodolites 238 The elevation of station A is 461.08m, stadia interval factor is 100.0 and C=0. This gives you a chance to see what might be causing your connection to falter and fix it before youre stopped completely and that 10-minute timer starts. 11.73 By angular equipment only 580 3.26 Conversion of horizontal angles into bearings 121 8.1 Definitions 411 3.7 The National Grid Reference system 160 1.64 Errors due to wrongly recorded temperature 46 endobj 4.43 The relationship between object and image in a thin lens 193 Applications and Design 12.61 Superelevation 627 4.92 Retrograde vernier 238 10.32 Alternative formulae for the calculation of volumes from the derived cross-sectional areas 525 Even if youre not having trouble, you should absolutely make sure your Chromecast is not in an enclosed area. Exercises 5 (h) (General) 289, 6 TRAVERSE SURVEYS 298 The fewer obstructions between you and the internet signal, such as walls, furniture, and simple distance, the more reliable your connection will be. Traversing is t, New Age International Pvt. Physics Alienware Aurora R13 Gaming PC -- surveying applied to construction and mining engineering projects, and to give guidance on practical methods of solving the typical problems posed in practice and, in theory, by the various examining bodies. 4.33 The relationship between object and image in curved mirrors 186 2.11 The degree system 57 1 Types of traverse 298 Threads & Torque Calcs Even ignoring all the different combat mechanics, you have your level, class, Support Levels, equipment, and more to consider. Little claim is made to new ideas, as the ground covered is elementary and generally well accepted. Bond Levels are somewhat like Support Levels, only instead of other units, these bonds are between you and the Emblems you collect that contain the spirits of heroes from past games. 10.61 Definitions 544 $h_{cr} = 0.0675K^2$. 5.61 The earth's curvature 272 But this is still a great time to upgrade, so check out these great new picks with both wireless and wired options available (plus a range of prices so you can match your budget). This video discusses a sample problem on stadia surveying.Sample Problem:A transit with stadia constant of 0.30 is used to determine the horizontal distance between points B and C, with a stadia intercept reading of 1.85 m. The distance BC is equal to 182.87 m. Compute the stadia interval factor of the instrument.Using the same instrument, determine the difference in elevation between B and D if the stadia intercept is 2.42 m and D is at a vertical angle of +6 degrees, 30 minutes from B.Also, compute the horizontal distance from B to D. Check out this playlist for more surveying lessons:https://youtube.com/playlist?list=PLnv_5HzK7awJl-CSCxIn5VG4gh7oHCT14Subscribe to get the most of this channel. 9.1 Areas of regular figures 457 Each chapter starts with basic concepts and definitions, then solution of typical field problems and ends with objective type questions. Engineering Standards Heat Transfer Course Hero is not sponsored or endorsed by any college or university. A First Aid & Safety Manual . Please enable JavaScript on your browser. Feedback Advertising 5.2 Principles 245 The book explains errors in survey measurements and their . They are often cryptic and unhelpful in actually describing the problem. 12.7 The ideal transition curve 630 2.4 Transformation of products and sums 79 Survey measurements are detailed next. There are a handful of common problems users have with this service, and we have the solutions you need for how to fix them. 1.42 The maximum length of offsets from chain lines 13 2.22 Small angles and approximations 73 12.82 The tangential angle 633 10.31 Calculation of volumes from cross-sectional areas 513 2.3 Trigonometrical ratios of the sums and differences of two angles 77 7.52 Horizontal subtense bar system 388, 7.6 Methods used in the field 392 9.4 Subdivisions of areas 490 $D = \dfrac{f}{i}s \cos \theta + (f + c)$, Subtense Bar Transcribed Image Text: PROBLEM 1: A survey party proceeded to do their stadia survey work as follows: the transit was set up at a point A and with the line of sight horizontal, took rod readings with the rod at point B and C, which were then measured to have taped distances from A to 200 m., and 60 m. respectively. Each chapter starts with basic concepts and definitions, then solution of typical field problems and ends with objective type questions. 9.26 The planimeter 477 Oh, and the game shouldnt, you know, just stop all of a sudden due to network issues. 11.53 To pass a curve through a given point P 567 675 Pages 13 Transition curves applied to compound curves 644 5.41 Reciprocal levelling method 257 5.63 The combined effect of curvature and refraction 273 Exercises 5(d) (Curvature and refraction) 275 10.62 Construction of the mass-haul diagram 545 You can also take that time to get a little more info on your connection by pressing the Stadia button and selecting Connection. 8.25 Given the rate of full dip and the rate and direction of an apparent dip, to find the direction of full dip 421 4.34 Sign convention lg7 Friction Engineering Aside from strengthening your internet connection, another way you might suffer extra input lag is through your TV. 4.9 The vernier 237 3.44 To obtain the bearing and distance between two 10. Beam Deflections and Stress Vibration Engineering 2.1 Angular measurement 57 Excel App. Please provide a valid email address to continue. 8.54 Given the angle 8 between the full dip of the seam and the true bearing of the fault, to find the bearing of the line of contact 446 This video discusses a sample problem on stadia surveying.Sample Problem:A transit was set up at point A. Please try again later. standard solutions quantity surveying division assessment of professional hydrographic surveying - civil engineering | florida curriculum for department surveying technology major 1.Problems Solutions Shepherd 52- X- ARNOLD Surveying Problems The Official Online Training Resource for the National Society of Surveyors (NSPS) Certified Survey Technician (CST) program. the stadia readings for the staff held at 25 m and 50 m are respectively 1.900, . Surveying & Earthwork Design: Stadia Distance - Level: Calculate distance by stadia measurement from survey rod readings and a level sighting. 11.51 To pass a curve tangential to three given straights 561 5.81 Grading of constructions 283, 5.82 The use of sight rails and boning (or travelling) rods 284 2. Exercises 8(a) 429 1.66 Errors from sag 48 8.21 Given the rate and direction of full dip, to find the apparent dip in any other direction 413 A survey party proceeded to do their stadia survey work as follows: the transit was set up at a point A and with the, line of sight horizontal, took rod readings with the rod at points B and C, which were then measured to have taped. If your actual Chromecast device is the root cause of your issues, most of the previously mentioned advice still applies, but Google also lists out some helpful troubleshooting tips. PROBLEM 1: A survey party proceeded to do their stadia survey work as follows: the transit was set up at a point A and with the line of sight horizontal, took rod readings with the rod at point B and C, which were then measured to have taped distances from A to 200 m . 2.5 The solution of triangles 80 The . 1.55 Correction for sag 32 APSEd Website: https://learn.apsed.in/Enrol today in our site https://learn.apsed.in/ and get access to our study package comprising of video lectures, study. stadia boardA rod purposely constructed for use in stadia surveying, usually having markings of unusual designs which have a clarity easily read at long distances. 7.31 Staff normal to the line of sight 362 Technological University of the Philippines Manila, CE120-02 Lecture 3 - Elevation Measurement by Levelling WITH SOLUTIONS.pdf, pdf-1-tachymetric-surveying-black-and-white_compress.pdf, CE120-02 Lecture 2 - Area Measurement by Tape.pdf, Behaviour_change_techniques_targeting_bo.pdf, ii Growing demand for wood owing to explosive rise in population iii River, On ce you have refined your research question decided upon a fo cus for your, Marketing Research (MKT 601) - Lecture Notes - Chp 10.docx, in Boulder to make it on the Strip Some get jobs wash ing dishes or waiting, Decision 13CMP1 annex paragraph 14 Decision 22CMP1 annex paragraph 91 Decision, Effectiveness of current security controls.docx, CAS number and Step A3B3 b Step B4 Step B5 Comments Conclusions structure Does, d debit Equipment 15000 credit Accumulated Depreciation 15000 If a company fails, preview feed forward is used 0 not used 1 01820 Command multiplier for each axis, Lab 29 (WAN - Research WAN Technologies).docx, DRAFTSTOPPING SHALL DIVIDE THE CONCEALED SPACE INTO APPROXIMATELY EQUAL AREAS. To do this, simply hold the Stadia button down for 10 seconds until the controller turns off, then press it once more to power it back on. Determine the stadia intervals at A and B. Thermodynamics Integral Calculus playlist:https://www.youtube.com/playlist?list=PLnv_5HzK7awIRc3ZWlZdtRZc-Y2J-J4SOQGIS playlist:https://www.youtube.com/playlist?list=PLnv_5HzK7awKb4x4LIn7Q9ATysrrzFc44Hydraulics playlist:https://www.youtube.com/playlist?list=PLnv_5HzK7awK--fvgZO3ph73XqlO1C0oKMechanics of deformable bodies playlist:https://www.youtube.com/playlist?list=PLnv_5HzK7awIUKkumNTTzetvOivFxkuiDStatics of rigid bodies playlist: https://www.youtube.com/playlist?list=PLnv_5HzK7awJMhlfGK7ZJe9WUXnAfbHjzComment, suggest, request, like, share and enjoy! The Carter Center | Waging Peace, Fighting Disease & Building Hope Surveying Problems and Solutions Manual 5.42 Two-peg method 259 Exercises 5 (b) (Adjustment) 264, 5.5 Sensitivity of the bubble tube 267 Topographic Surveys <> Expert Answer. HVAC Systems Calcs Exercises 10 (a) (Regular solids) 511 12.12 Setting-out processes 640 Write all your complete illustrations if necessary and complete solutions to each problem. Even if your Wi-Fi speeds are top of the line, it is inherently less stable than a wired connection, and those dips in speed can force your game to lag and drop in quality. 4.16 Use of the true horizon 174 endstream ? Compute the difference in heights between two points A and B from the following . 9.43 The sub-division of an area by a line through a known point inside the figure 492, 11 CIRCULAR CURVES 559 U>Hb Jn0WErD74x:\Tf6[^.+]t*J;r|`Qmv;,wTV_ 2.17 Points of the compass 65 WorldCat is the worlds largest library catalog, helping you find library materials online. D = D ( h 2 R 2 h R) Effect of curvature and refraction. $D = \cot (\frac{1}{2}\theta)$, Reduction to sea level Angle, And Direction. Since the inputs youre using on the controller are being sent over the internet to the server, and not the device youre actually seeing the game on, a stronger Wi-Fi connection will help reduce lag and disconnects. Surveying Principles for Civil Engineers - Paul A. Cuomo 2003 Surveying Principles for Civil Engineers oers a comprehensive review of the eld of surveying specially tailored for the Engineering Surveying section of the California Special Civil Engineer exam. 3.21 True north 115 5.54 Gradient screws (tilting mechanism) 271, 5.6 The effect of the earth's curvature and atmospheric Control Surveys 8.31 Given the inclination and direction of full dip, to find the rate of apparent dip in a given direction 427 9.14 Surface areas 461 Finishing and Plating The main part of the work of the engineering surveyor, civil and mining engineer, and all workers in the construction industry is confined to plane surveying, and this book is similarly restricted. 9. 5.83 The setting of slope stakes 286 4.1 Reflection at plane surfaces 170 VPNs and firewalls are two other things that could throttle your performance on PC worth investigating. 2.61 To find the height of an object having a vertical face 91 In the figure, the difference in elevation between observed points A and B is 15 m and the horizontal distance between them is 35 m. With transit at Station O, additional information was obtained as shown in the table. Another thing to check is what type of HDMI port your Chromecast is plugged into. On some rules, the values of a range from 0 34 to 45; on others, from 0 03 to 45. 11.54 Given a curve joining two tangents, to find the change required in the radius for an assumed change in the tangent length 572 Fundamentals of Surveying 4.57 The tachometric telescope (internal focusing) 207, 4.6 Instrumental errors in the theodolite 210 The book explains errors in survey measurements and their propagation. stadia constant [LEVELING]The constant which is multiplied by the stadia interval to obtain the length of a sight in meters. Also, the constant by which the sum of the stadia intervals of all sights of a run is converted to the length of the run in kilometers. 9.23 The mid-ordinate rule 473 CIVL272 Surveying. Transits and Theodolites Exercises 5(g) (Construction levelling) 288 6.21 Compass traversing 300 Compute the horizontal distances DE and DF. Stadia Distance - Inclined . stream 9.22 The mean ordinate rule 472 distances from A to 200m and 60m respectively. Machine Design Apps Exercises 3(d) (Co-ordinates) 163 Appendix (Comparison of Scales) 169, 4 INSTRUMENTAL OPTICS 170 Engineering Calculators Sorry, an error occurred during subscription. % 2.63 To find the height of an object above the ground when its base and top are visible but not endobj 3.43 Tabulation process 135 5.51 Field test 267 6 0 obj 3.25 Types of bearing 117 7.45 The effect of the stadia intercept assumption 372 Exercises 7(a) 380, 7.5 Subtense systems 383 Digital Trends Media Group may earn a commission when you buy through links on our sites. h c r = 0.0675 K 2. The stadia rod is placed at points B and C and the rod readings show stadia intercepts from B and C as 2.001 m and 0.600 m, respectively. endobj 6.32 A mistake in the angular value at one station 307 Engineering Book Store 1 Definitions 244 Photogrammetry, Stadia Measurement 10.4 Calculation of volumes from contour maps 543 4.18 Images in plane mirrors 176 Also called stadia survey. See also tachymetry, tacheometry. Use the prescribed format for this requirements. Decision Making selecting method, equipment and final point locations. Course Hero is not sponsored or endorsed by any college or university. <> The distance C is called the stadia constant. 8.4 The rate of approach method for convergent lines 432 6.23 Direction method 302 <> 9.11 Areas bounded by straight lines 457 <> There is one final way you can essentially guarantee to improve your performance on Google Stadia, but it comes at a cost. <>/ExtGState<>/XObject<>/ProcSet[/PDF/Text/ImageB/ImageC/ImageI] >>/MediaBox[ 0 0 612 792] /Contents 4 0 R/Group<>/Tabs/S/StructParents 0>> 4. Rod readings are taken at height of instrument. 4.22 Total internal reflection 177 1.63 Reading or marking the tape 46 2.65 To find the height of an object from three angles of elevation only 100 As such, you can then mix and match learning more skills from new Emblems as you increase their Bonds and then switch to new ones. 2.54 Half-angle formulae 82 Stadia tables and/or diagrams are available to ease the computation, as are specially prepared stadia slide rules. 6.44 Where the bearings of two lines are missing 309 Reconnect and you should be good to go. 1.56 Reduction to mean sea level 38 9.2 Areas of irregular figures 471 1.62 Mal alignment and deformation of the tape 45 Again, that may not always be a viable option. stadia rodA graduated rod used to measure the distance from the observation point to the place where the rod is positioned. 9 0 obj Hardware, Imperial, Inch Exercises 11(b) (Curves passing through a given point) 571 Exercises 9 497, 12 VERTICAL AND TRANSITION CURVES 607 3.31 Partial co-ordinates, AE, AN 128 JFIF ` ` C Pumps Applications Fire Emblem Engage bond levels: how to get max Bond Levels fast, Best Alienware Deals: Save on gaming laptops, PCs and monitors. Exercises 11(c) 588 It is also worth doing a factory reset by holding down the Google Assistant and Capture buttons for six seconds, or until you feel it vibrate. If you happen to be a Stadia Pro member, turning off HDR alone can make a massive difference. Google Stadia was one of the first major game streaming services with a big company pushing it. 9.25 Simpson's rule 474 endobj 7.65 Two auxiliary bases 398 T D = M D E r r o r. Reduction to sea level. refraction 272 Downloads 12.41 Sight distances for summits 611 Exercises 6(d) (General) 352, 7 TACHEOMETRY 359 2.18 Easy problems based on the solution of the right angled triangle 67 Exercises 2(a) 71, 2.2 Circular measure 72 9.24 The trapezoidal rule 473 Use the prescribed format for this requirements. You must have JavaScript enabled to use this form. It is also worth doing a factory reset by holding down . Alienware m15 R7 Gaming Laptop -- It is a low-cost way of surveying. 3.6 Transposition of grid 158 Trigonometric formulas involving the vertical angle and rod intercept have been derived to make this reduction. If this message pops up before you even load into a game and start playing, it means that Stadia attempted to run the game but realized that your internet connection wasnt strong enough to run it. A number of practice problems are provided for each section, with answers in the back for selected problems. 4.91 Direct reading vernier 237 8.22 Given the direction of full dip and the rate and direction of an apparent dip, to find the rate of full dip 413 7.32 Staff vertical 363, 7.4 The effect of errors in stadia tacheometry 367 Stadia Tacheometric Survey Problem: A tacheometer is set up at a distance of 194.20 m from the stadia rod. $.' Each inclined measurement is reduced to give the horizontal distance and difference in elevation. 7.4 The effect of errors in stadia tacheometry 367 Exercises 11(e) (Reverse curves) 605 If you use the Stadia app, you can drop the visual quality of your stream down in a few ways. Each Chapter Starts With Basic Concepts And Definitions, Then Solution Of Typical Field Problems And Ends With Objective Type Questions.The Book Explains Errors In Survey Measurements And Their Propagation. endobj 4.25 Instruments using refraction through prisms 180 Exercises 4(a) 184, 4.3 Spherical mirrors 184 6.42 Where the length of one line is missing 309 6.46 Where the length of one line and the bearing of another line are missing 315 Exercises 6(b) (Omitted values) 316, 6.5 The adjustment of closed traverses 317 Complete solutions allow you to check your solving methods so you'll 2.56 Problems involving the solution of triangles 83, 2.6 Heights and distances 91 10.64 Free-haul and overhaul 546 PENTUS FIELDWORK NO. 7.42 Error in the angle of elevation with the staff normal 367 1. When feet, yards, or rods are used, the resulting lengths will be in feet and kilofeet or yards and kiloyards. 4.21 Laws of refraction 177 Exercises 6 (c) (Traverse adjustment) 348 STADIA SURVEYING. Advantages of Tacheometric Surveying. 7.61 Serial measurement 392 5. To help you out, here's our roundup of the best Alienware deals that you can shop right now. 4.52 Galileo's telescope 196 11.4 Geometry of the curve 560 11.71 By linear equipment only 576 Sample Problem Stadia Interval FactorA theodolite is set up at one end of a level baseline 150.0m 0m long. 1.69 Errors due to the difference between ground and grid distances 52 Exercises 1(b) 52, 2 SURVEYING TRIGONOMETRY 57 10.5 Calculation of volumes from spot-heights 543 1.1 The basic principles of surveying 1 2023, by Engineers Edge, LLC www.engineersedge.com There was a lot of hope that Google of all companies would be able to overcome the huge technical and financial hurdles that this new and promising way to play games had. Mechanical Tolerances Specs endobj 2.64 To find the length of an inclined object on the top of a building 98 6.22 Continuous azimuth method 301 By dropping it down toBalanced, or evenLimited Data Usage if you dont mind playing at 720p, you will free up that much more of your connection to improve the actual performance. Compute the length of each course, the traverse perimeter, and the elevations of the traverse stations. Exercises 12(b) 649, Copyright 2000 - 4.2 Refraction at plane surfaces 177 wv'k}:Gquj~bByH.~Gy_m~ e@WsG()`f>?Bjd$*xz1p06xfu\(DgY$V-U 9 1\IW&f#8L:[`NPe 'r}7;MxVK!_[k?{A\ U:o~yR$Z80sW'| &bMG$JtL^Hd Highway Curves This book is an attempt to deal with the basic mathematical aspects of 'Engineering Surveying', i.e. 9. 6.54 Adjustment to the length and bearing 330 <> It is hoped that the mathematics of surveying, which so often causes trouble to beginners, is presented in as clear and readily understood a manner as possible. Angles and Directions Assume K-100 and C = 0. 1.4 Chain surveying 6 8.33 Given the inclination and direction of two apparent dips, to find the inclination and direction of full dip 429 endobj 1.2 General theory of measurement 2 Electronics Instrumentation Lubrication Data Apps They all relate to your connection, so all above tips on strengthening your network apply to these errors. This video discusses a sample problem on stadia surveying.Sample Problem:A transit with stadia constant of 0.30 is used to determine the horizontal distance . If not, then disconnecting any other devices on your Wi-Fi will help, especially if theyre doing something intensive like downloading or streaming. Hydraulics Pneumatics 8.24 Given two apparent dips, to find the rate and direction of full dip 416 4.35 Derivation of formulae Igg <> Hardware, Metric, ISO 10.6 Mass-haul diagrams 544 5 0 obj <> <>/Metadata 1121 0 R/ViewerPreferences 1122 0 R>> 2.16 Trigonometric ratios of common angles 64 With a horizontal line of sight, the stadia intercept was recorded to be 1.94 m. If the stadia constant is 0.30, find the stadia interval factor.CE120-02-Fundamentals of Surveying 4.8 Angular error due to defective centering of the theodolite 234 wW )aezBBfF7l tFC_sj 5.64 Intervisibility 275 Exercises 5 (e) (Intervisibility) 277 7.41 Staff tilted from the normal 367 salewisconstruction.com/residential-lots-2, Stadia tacheometric survey is a branch of surveying in, horizontal and vertical distance of points, obtained by optical measurement avoiding ordinary. 4.62 The line of collimation not perpendicular to the trunnion axis 213 }SvN6QXMrW|?b QQx3oFbUS|wX1zLT"B#gT6?t4bP[pGbG_&=Ov`,OY2r"[D$ M4@,?ac Integral Calculus playlist:https://www.youtube.com/playlist?list=PLnv_5HzK7awIRc3ZWlZdtRZc-Y2J-J4SOQGIS playlist:https://www.youtube.com/playlist?list=PLnv_5HzK7awKb4x4LIn7Q9ATysrrzFc44Hydraulics playlist:https://www.youtube.com/playlist?list=PLnv_5HzK7awK--fvgZO3ph73XqlO1C0oKMechanics of deformable bodies playlist:https://www.youtube.com/playlist?list=PLnv_5HzK7awIUKkumNTTzetvOivFxkuiDStatics of rigid bodies playlist: https://www.youtube.com/playlist?list=PLnv_5HzK7awJMhlfGK7ZJe9WUXnAfbHjzComment, suggest, request, like, share and enjoy! Digital level H. Digital Theodolite A surveying instrument and precision instrument for measuring angles in the horizontal and vertical plane the se of theodolite, Mapping applications and in the . 6.31 A mistake in the linear value of one line 306 3.14 Plotting accuracy 114 4.56 The anallatic lens 203 stream Just like with your network, the best way you can eliminate this latency is to use a USB connection to directly plug your controller in. 12.4 Sight distances 611 6.33 When the traverse is closed on to fixed points and a mistake in the bearing is known to exist 307, 6.4 Omitted measurements in closed traverses 308 Unfortunately, these are among the most common issues with Google Stadia. Gears Design Engineering cU&Q("%M_VmegjMGEG#A G`OD @(l8f7 SUnssC1W}|zi/;gR-WqE $\Delta D = D\left( \dfrac{h^2}{R^2} - \dfrac{h}{R} \right)$, Effect of curvature and refraction 3.32 Total co-ordinates 128 Exercises 3(b) (Plotting) 131, 3.4 Computation processes 133 5.52 O-E correction 268 Another variation is a reticule with straight lines, with one fixed and the other free to move with the telescope inclination by a suitably designed and formula-based cam. 2.52 Cosine rule 81 The 5GHz band has a shorter range but provides faster speeds than the 2.4GHz band. Manufacturing Processes 8.51 Definitions 437 Structural Shapes Many do prefer the controller, especially for specific games, but this is another point where errors crop up. 4.61 Eccentricity of the horizontal circle 210 1.53 Correction for temperature 26 Depending on how your home is set up, this can be more or less difficult, but if you want the strongest, most stable connection, theres no alternative. Fire Emblem Engage has a lot of systems to keep track of. 3.41 Computation by logarithms 134 ERRORS IN TACHEOMETRIC SURVEYING.pptx. These things have become notorious for how much heat they generate, and if they dont get enough ventilation they could damage themselves at best, or cause a fire at worst. Survey measurements are detailed next. are missing 309 6-52 Traverses which return to their starting point 323 Design & Manufacturability This band is also likely being used by fewer devices in your home, freeing up all the bandwidth to be used for gaming. 1.57 Reduction of ground length to grid length 39, 1.6 The effect of errors in linear measurement 45 Author: A. M. Chandra Summary: The book provides a lucid and step-by-step treatment of the various principles and methods for solving problems in land surveying. 1 Convert the following whole circle bearings into quadrant bearings: 214 o 30'; 027 o 45'; 287 o 45'; 093 o 30'; 157 o 30 . 11.6 Location of tangents and curve 575 4-94 Geometrical construction of the vernier scale 238 Exercises 4(b) 240, LEVELLING 244 11.52 To pass a curve through three points 563 3.42 Computation by machine 134 8.26 Given the levels and relative positions of three points in a plane (bed or seam), to find the direction and rate of full dip 422 7.43 Staff tilted from the vertical 368 12.1 Vertical curves 607 Problems in Stadia surveying 1. 12.5 Setting-out data 616 4.36 Magnification in spherical mirrors 190, 4.4 Refraction through thin lenses 191 Stadiametric rangefinding, or the stadia method, is a technique of measuring distances with a telescopic instrument.The term stadia comes from a Greek unit of length Stadion (equal to 600 Greek feet, pous) which was the typical length of a sports stadium of the time.Stadiametric rangefinding is used for surveying and in the telescopic sights of firearms, artillery pieces, or tank guns, as well .