Distance Measurer

How Do I Accurately Measure the Contours of a Surface From Distance ?

I know various electronic measuring devices exist to give the distance of a surface from the measurer. Such as hand held surveying tools etc using a laser beam etc.

This is actually relatively easy and the technology is used in several industries, notably the automobile industry.

Essentially, you use an optical projector to project multiple parallel line, scattered dot or more complex encoded patterns on the surface. These projected patterns are then picked up by multiple cameras and a computer calculates the surface from the distortion of the patterns.

In case of parallel stripes a flat surface will reflect parallel stripes. If the surface is curved, the stripes will appear closer in some places and wider apart in others. From that one can calculate the local angle of the surface relative to the projecting beam and from that, by integration, the absolute contour. But there are much more advanced test patterns than that.

EFO | How to measure distance, area and volume easily

Ultrasonic Laser Distance Length Meter Feet Measurer Measuring Finder Tool Tools $14.40

Bosch GLR225 Laser Distance Measurer $79.99

Brand New Bosch Precision Laser Distance Measurer GLR225 Up to 230 ft / 70m $1.31

HILTI PD42 Laser Range Finder Distance Measurer 200m $592.00

DEVON LM80 Laser Range Finder Distance Measurer 80m $130.00

AR851 Laser Range Finder Distance Measurer 60m $80.00

Ultrasonic Laser Distance Length Meter Feet Measurer Measuring Finder Tool Tools $15.15

Bosch DLR130K Laser Distance Measurer $49.99

Ultrasonic Distance Measurer Laser Point $35.00

BOSCH DLR130 LASER DISTANCE MEASURER brand new $2.25

Brand New Bosch Precision Laser Distance Measurer GLR225 Up to 230 ft / 70m $0.99

HOUSEWORKS ULTRASONIC DIGI-TAPE DISTANCE MEASURER FROM POLAROID $4.99

Mastercraft Distance Measurer Estimator with Laser $48.99

Bosch GLR225 Laser Distance Measurer, New, NO RESERVE!!! $42.00

NEW IN BOX Bosch DLR130K Laser Distance Measurer with Belt Pouch $50.00

Laser Distance Meter Feet Measurer Measuring Range Finder device Tool accurately $0.99

Ultrasonic Laser Distance Length Meter Feet Measurer Measuring Finder Tool Tools $14.10

Bosch DLR130K Digital Distance Measurer Kit $110.87

Bosch GLR825 Laser Distance Measurer, NEW, 3yr WARRANTY $418.99

Stabila 06400 Laser Distance Measurer LD400 $239.00

Stabila 06300 Laser Distance Measurer LD300 $124.00

Prexiso X2 Laser Distance Measurer $135.30

Ultrasonic Laser Distance Measure/Measurer Meter Tool $28.85

Stabila 06300 Laser Distance Measurer Kit NEW $150.00

Stabila 06400 Laser Distance Measurer Kit NEW $250.00

Black&Decker Sonic Distance Measurer Digital Tape Area Calculator SM400 $25.00

Contractor-grade Ultrasonic Distance measurer w/ laser $24.99

LCD Ultrasonic Distance Meter Measurer and Laser Pointer C $16.25

Bosch GLM 250 VF Laser Distance Measurer Rangefinder $405.95

Bosch Pocket Size Lazer Distance Measurer DLR130K $112.99

Ultrasonic Laser Point Distance Measurer Meter Ruler $35.00

Ultrasonic Laser Point Distance Measurer Telemeter $39.00

Stabila 06300 LD300 Laser Distance Measurer $159.99

SuperTough – Contractor-grade Ultrasonic Distance Measurer with Laser Pointer $39.99

DeWALT DW030P DW030 Cordless Laser Distance Measurer Measuring Tool $137.00

Ultrasonic Distance Measurer Laser Rangefinder Home DIY $39.50

Ultrasonic Distance Area Volume Measurer Rangefinder $39.50

Bosch GLR825 Laser Distance Measurer Meter 825ft – 251m. NEW $305.95

NEW Bosch GLR225 Laser Distance Measurer $179.99

Sonic Ultrasonic Distance Tape Measurer Meter with Laser with English or Metric $15.99

Ultrasonic Distance Measurer with Laser Targeting $21.60

Bosch GLR225 Laser Distance Measurer – NEW $149.95

BOSCH GLR225 Laser Distance Measurer 230ft New L@@K $149.00

Bosch GLM 80 Laser Rangefinder 80m Distance and Angle Measurer $195.98

Calculated Prexiso X2 Laser Distance Measurer 3350 $99.95

Bosch 230-ft Laser Distance Measurer GLR225-RT $106.98

Distance Measurer Meter, 1.8″ LCD 60Ft Ultrasonic Distance Measurer w/ Red Laser $19.99

Bosch DLR130K Digital Laser Distance Measurer Brand New in the Box!!!! $86.99

Black and Decker BDL4SM1 Marksman Distance Measurer and Crosshair Auto Level Las $499.89

Stabila 06300 Laser Distance Measurer LD300 $119.00

Bosch Laser Distance Measurer- 500ft Range GLR500 $479.99

Bosch Laser Distance Measurer- 230ft Range GLR225 $249.99

Bosch Laser Distance Measurer- 825ft Range GLR825 $579.99

Ultrasonic Range Finder Distance Meter Measurer MASTECH $28.98

Bosch GLR225 LASER DISTANCE MEASURER NEW! FREE SHIPPING! $120.00

Leica DISTO D2 Handheld Laser Distance Measurer 763495 NEW $179.00

Brand New HILTI PD42 Laser Range Meter Distance Measurer 200m $620.00

Ultrasonice Distance Measurer $9.99

Bosch Laser Distance Measurer DLR130K $99.99

Bosch 230-ft Laser Distance Measurer GLR225 NEW $146.98

LCD Ultrasonic Laser meter Pointer Distance Measurer $17.99

Bosch GLM-80 Laser Rangefinder 80m Distance Angle Measurer $189.16

Bosch GLM-50 Laser Rangefinder 50m Distance Angle Measurer $227.90

Bosch GLM-150 Laser Rangefinder 150m Distance Angle Measurer $339.00

60ft LCD Ultrasonic Distance Laser Pointer Measurer Ultrasonic Diastimeter CP3007 $19.09 This item is without retail box. The ULTRASONIC DISTANCE METER + LASER POINTER is a perfect tool to quickly know the distance, area and volume of a room! It can measure distances in a straight-line from 1.5 Feet to 60 Feet. Your distance measurer transmits ultrasonic waves to a point you want to measure. Afterwards, it measures the time taken by the waves to reflect and then calculates and re-tran…

Bosch DLR130K Digital Distance Measurer Kit Laser Technology for Optimum Accuracy Ideal for trim work–including installing base board, toe molding, and crown molding–the DLR130K uses a laser beam to perform both pointing and measuring applications. It can measure length, area, and volume measures in four systems: inches, feet and inches, decimal feet, and metric. The DLR130K’s 2-inch to 130-foot range and two reference points–located at…

HDE (TM) Ultrasonic Distance Measurer w/ Laser Pointer $16.95 The ultrasonic distance measuring meter allows you to measure, store, and calculate distances. Press “READ” to turn on the device. This distance meter allows you to store 3 different measurements. This function is useful if you want to measure the length, the width and the height of a room. The device will initially display the units in meters, but also can be displayed in feet. The distance meter…

CALC IND 3350 PREXISO X2 LASER DISTANCE MEASURER $150.08 CALC IND 3350 PREXISO X2 LASER DISTANCE MEASURER…

SuperTough – Contractor-grade Ultrasonic Distance Measurer with Laser Pointer $59.99 Manufacturer Specifications ?Primary Function: Ultrasonic Distance Area and Volume Laser Measurement Device ?Maximum Minimum Distance: 91cm to 15 meters (3 Feet to 48 Feet) ?Accuracy: 0.5 % + 1 Digit (2-60ft) ?Working Temperature: 32 F to 109.4 F ?Laser: Class II Laser Product ?Output: 1mw ?Power Source: 1 x 9V Battery ?Dimensions: 155mm x 70mm x 32mm (L x W x D) ?Certification: CE, FCC, RoHS…

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IR Infrared Thermometer Gun w. Laser Guide ST-380 Non Contact Temperature Measurement Gun w. Laser Guide $29.99 This is a brand new, high quality Digital IR Thermometer for non-contact temperature measurements. It can be used for accurate measurements of hot surfaces from a safe distance. The distance to spot size ratio is 12:1, that means the ST380 measures a 1 inch diameter spot from 12 inch distance (or 2 inch diameter from 24 inch distance). It has a built in laser pointer and a multifunctional display …

Swiss+Tech SRTWCR-PS Smart-Rule 7-in-1 Ultrasonic Measure with Laser Targeting, Window Gift Box $9.95 Ultrasonic Measuring Tool with Laser TargetingProduct InformationThe Smart-Rule Xi 7-in-1 is an accurate distance measuring tool that truly fits in the palm of your hand. Use the handy laser pointer to locate the target then measure the distance in feet and/or meters with pushbutton convenience and audible confirmation. Also includes bright LED flashlight emergency flasher panic alarm pullout ball…

Keson SR18100 Surveyors Rope 100ft $15.75 SR18100 10-pack Surveyors’ Rope, 100-ft,feet & inches graduations. Makes an ideal drag chain for rough, surveying measurements. Numbers are graduated from the strap handle upward to the end of the rope….

Medicus Power Meter $49.95 Wondering if you need a golf swing speed meter? Before you can increase your club head speed, you need to know your golf club swing speed–the Medicus Golf Power Meter tells you both instantly and accurately. Get instant feedback to improve consistency and control so you can hit longer and straighter shots by increasing the power of your speed. Sometimes, trying to swing harder can actually cause …

Callaway Nikon Diablo Octane Rangefinder $279.99 The Nikon Diablo Octane Rangefinder from Callaway provides quick and accurate distance measurement up to 550 yards (500 meters) and features First Target Priority mode. This monocular also spotlights fast, one-touch measurements.