Examination of distance measuring devices

by Stephen Hasko

Publisher: U.S. Dept. of Commerce, National Bureau of Standards, Publisher: For sale by the Supt. of Docs., U.S. G.P.O. in Washington, D.C

Written in English
Published: Pages: 54 Downloads: 686
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Subjects:

  • Distances -- Measurement -- Equipment and supplies -- Testing.,
  • Measuring instruments -- Testing.

Edition Notes

StatementStephen Hasko.
SeriesNBS handbook ;, 137
ContributionsUnited States. National Bureau of Standards., National Measurement Laboratory (U.S.). Office of Weights and Measures.
Classifications
LC ClassificationsTA601 .H37 1980
The Physical Object
Paginationviii, 54 p. :
Number of Pages54
ID Numbers
Open LibraryOL4236121M
LC Control Number80600182

Measuring by Microwave Devices The microwave distance-measuring device (fig. ) is an electronic instrument that transmits precisely controlled RADIO WAVES between two units. The waves are compared and electronically changed into a visually readable form from which the distance between the units can be computed. DMD - Distance Measuring Device. Looking for abbreviations of DMD? It is Distance Measuring Device. THE RULE WHICH DID FOR MATT THE use of distance measuring devices during a stipulated round remains contrary to the Rules of Golf, the principal change to the Book concerns the use of distance measuring devices. Methods For Measuring Distances •Electric Distance Measurement (EDM) Distances are measured electronically by determining the number of full and partial waves of transmitted electromagnetic energy that are required in traveling the distance between the EDM and a prism. Can achieve an accuracy of +/- (1 mm + 1 ppm) to +/- (10 mm + 5 ppm).File Size: 84KB. presented in AASHTO Green Book.. 11 Table 2. Green Book passing sight distances for design of two-lane highways.. 13 Table 3. Green Book passing sight distances for design of .

Distance Measuring Equipment combining quality with exceptional value for money. The equipment employs state-of-the-art technology ensuring high reliability in order to meet the demands of both civil and military requirements. Integrity, reliability and maintainabilityFile Size: 2MB. Directionality of the overhead view is determined by using a compass. Using a tape measure or other measuring devices, measurements are taken at crime scene of the distances between objects and/or structures at the crime scene. These measurements are proportionally reduced on the rough sketch and the objects are drawn in. Distance measuring is a central application in most forest measurement jobs: to measure radius of sample plots, distance to trees for height evaluation, distance to border trees when using a factor gauge, etc. Depending on your standards and accuracy demands, the methods and means to measure these distances will vary. At the same time, it is a comprehensive refer­ ence book for all surveyors as well as for other professionals and scientists who use electronic distance measurement as a measuring tool. Great emphasis is placed on the understanding of measure­ ment principles and on proper reduction and calibration pro­ cedures.

A distance-measuring device for measuring the distance to an object (M) which comprises (i) a frequency-controlling means (11 A) which outputs a frequency-control signal whose frequency is changing, (ii) a transmitting means (12 A) which sends out an electromagnetic wave whose frequency is the same as the frequency of the frequency-control signal, (iii) a detecting means (13 A) which is Cited by: measuring to the accuracy of the acceptance criteria, or which satisfy the need of the examina-tion, should be used. Experience and Training Another obvious prerequisite is that the VT examiner should have sufficient knowledge and skill to perform the examination successfully and meaningfully. Knowledge and skill can be im-.   For various of measuring jobs, laser tape measure can deliver accurate result even for metering a long distance in various job sites. If you are thinking that you need one of them, then we have gathered numbers of the best laser tape measure ideal for . close examination of the lids, lashes, cornea, and lens can be accomplished with in the snellen acuity recording chart the reading 20/ the number "" represents. distance in feet at which a normal eye can see a particular line on the chart. If pinhole acuity test is for to improve a patients poor visual acuity the patient potentially.

Examination of distance measuring devices by Stephen Hasko Download PDF EPUB FB2

COVID Resources. Reliable information about the coronavirus (COVID) is available from the World Health Organization (current situation, international travel).Numerous and frequently-updated resource results are available from this ’s WebJunction has pulled together information and resources to assist library staff as they consider how to handle coronavirus.

Techniques. Active methods use unilateral transmission and passive reflection. Active rangefinding methods include laser, lidar, radar, sonar and ultrasonic rangefinding. Other devices measure distance using trigonometry are stadiametric, coincidence and stereoscopic methodologies that use a set of known information (usually distance or target sizes) to make the measurement.

Under the ADA, a medical examination must be job-related and consistent with business necessity to be lawful, noted David Fram, director of ADA services with the National Employment Law Institute.

the distance measuring device, accessible for the staff at all times. When passing on the distance measuring device to third parties, the operating instructions must be passed on as well.

NOTE. These operating instructions describe all distance mea-suring devices DL Pro. Distance measuring equipment (DME) is a radio navigation technology that measures the slant range (distance) between an aircraft and a ground station by timing the propagation delay of radio signals in the frequency band between and megahertz (MHz).

Line-of-visibility between the aircraft and ground station is required. An interrogator (airborne) initiates an exchange by transmitting. measures officials. This particular Handbook treats the examination of distance measuring devices.

The Handbook is part of a series which will supersede NBS Handb "Testing of Measuring Equipment." Each of the several types of measuring devices is being considered separately in. within the Book of Exhibits.

In addition to the Book of Exhibits, all test kits have standard measuring tools necessary to complete the examination. IMPORTANT 1. Read each question carefully and completely, including every choice provided.

There will only be one correct Size: KB. AR distance measurement sensors are Acuity’s longest-range models. Ideal for measuring positions of cranes and trolleys, the time-of-lfight sensor can reach meters to normal surfaces and up to meters when using a Examination of distance measuring devices book target.

The AR samples with speeds up to 2 KHz. This is Bicycle distance meter circuit or Measure the distance by use bicycle wheel as main tool and normal electronic circuits and so important parts are reed switch detect a magnetic force to CD as Decade counter with 10 decoded outputs IC then connected to Optocoupler 4N26, and display to a frequency counter.

Going The Distance: Seven of the Best Distance-Measuring Devices You Can Buy It has been 10 years since the USGA allowed distance-measuring devices on the course if a Local Rule is enacted.

The Math of Pacing. Vyou = your speed. Vcop = the officer's speed closing in on you. Dyou = the distance you travel during the "pace".

Dcop = the distance the officer travels during the "pace". Dcop0 = the distance the officer was behind you, when the officer started the "pace". t = the time the officer took to start from Dcop0 behind you, to catch up to you, and wind up on your tail.

Distance Measuring Devices Since the days when selecting a club was done purely by “eye”, there has been development of aids available to players to help gauge distance. Initially, there was the introduction of course yardage charts, distance markers at the sides of fairways and distances on sprinkler heads.

Different methods for measuring exist but accurate measurement can usually be determined by an ECP during an eye is normally done with a small millimeter ruler referred to as a "PD stick" or with a corneal reflex pupillometer, which is a machine calibrated to help the optical professional more accurately measure the pupillary distance.

PRECISION MEASURING INSTRUMENTS - OD - LESSON 1/TASK 1 Slide Calipers. Most calipers come in two shapes. One shape measures an outside distance; the other measures an inside distance. A single slide caliper can be used to measure both outside and inside dimensions. One edge of the caliper jaw measures outside, and the other edge measures.

The Snellen test checks the persons ability to see at distances, measured at 20 feet. It is a wall chart that has several rows of letters.

The letters on the top row are the largest and those on the bottom row are the smallest. The E chart tests the vision of children and people who cannot read, but can verbally respond to questions. It is. plications. It enables machine vision to be used for a variety of functions, including: identification of shapes, measurement of distances and ranges, gaging of sizes and dimensions, determining orientation of parts, quantifying motion, and detecting surface shading.

Several examples of machine vision applications are shown in Fig. Electronic Distance Measuring (EDM) Device and Data Recorder An Electronic Distance Measurer (EDM) can be used to place objects or points in three dimensions in relation to the unit.

The EDM emits a beam of infrared light that is modulated at a controlled rate. During use, the light beam is emitted from the EDM, reflected off a prism or target.

The USGA's Thomas Pagel and Carter Rich discuss distance-measuring devices and how golfers can make sure they are using them in conformance with the Rules of. The 'Pioneering P1' laser distance meter looks to replace that measuring tape in your toolbox in order to more effectively measure distances with the power of technology.

Packed with an extremely compact laser system, the 'Pioneering P1' is capable of being used in a variety of different scenarios to measure and relay the information back to. Book Measuring Device ,00 € Other product; Other products. Previous. Thread Counter From 7,83 € Caliper F00 € Compass F00 Book Sewing Frame FromHeights can be measured from any distance - simply enter the distance to the tree, aim at the bottom of the tree (press button), then at the top (press button) and read off the height Digital compass displays from degrees in 1 deg increments and accuracy of deg, has magnetic declination and is.

Scattered light dust measuring devices | DUSTHUNTER SP30 | DHSPT2VBGPNNNNNXXS | Part number: | Order now at SICK. While Rule and Appendix IV govern the general use of electronic devices and, specifically the use of distance-measuring devices, this document answers a number of common questions including: use of the Local Rule; what types of devices can be used to measure distance; and the general use of multi-functional devices during a round of golf.

This is the home page for all of the information you need about the Rules of Golf, including the new Rules that officially go into effect on Jan. 1, All Book Search results » About the author () J.M. Rueger is currently an associate professor at the School of Geomatic Engineering, University of New South Wales, Sydney, Australia.

The advent of distance-measuring devices and their use in the game divides opinion at many levels. Many golfers are fans of these devices as they feel it puts them on a level footing with tournament professionals who have caddies providing precise distance information, whilst others will argue that there is no place for such technology in the game.

Distance Measuring Devices In accordance with USGA Rule () and appendix IV, section fi ve of the USGA rules of golf it is determined that the use of distance measuring devices during tournament play will be decided by local rule. It is determined by Bay Palms that during a stipulated round, distance.

VASCAR works like this: The officer measures the distance between the two points by using a measuring tape or uses the patrol car’s odometer, which is connected to the VASCAR unit. When the officer sees the target vehicle pass one of two points, the officer pushes a button to start the electronic stopwatch, then pushes it again to stop it.

Next week is my AWS CWI exam. I'd like to ask inspectors who recently passed this exam a few questions regarding Practical part: 1) How you mark plastic replicas for inspection (for example: what's the fillet weld size or undercut at distance 3½" from the left side of sample "B").

Are you allowed to scribe on test piece. Map Measuring Gauge Meter Scale Mileage Odometer Map Range Finder Distance Calculator Tools for Camping Hiking Outdoor Survival Tools out of 5 stars 10 £/5(89). objects. For this purpose noncontact distance measuring systems are used for placement and distance determination.

As usually, existing measuring systems are based on laser ultrasonic or radar devices [1], and complete measuring systems cost some hundred dollars. The low measuring range for such sensor systems are limited by mm [1].File Size: 1MB.Traditional distance measurements often take advantage of two general methods.

The first method is based on time-of-flight by directly measuring the round trip time delay of a pulse. The time-of-flight methods have shown inadequate resolution due to the limited time measurement capability of current optical/electrical instruments [].Author: Jinlong Yu, Wenrui Wang, Hao Hu, Wang Miao, Ju Wang, Jigui Zhu, Bin Sun.This text gives an up-to-date introduction into electronic distance measurement (EDM) with a comprehensive review of modern equipment and procedures.

It is excellently suited as a text for undergraduate and graduate students and an invaluable reference for practicing surveyors, geodesists and other scientists using EDM as a measuring tool. This totally revised third edition of a text first.