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2. Autocollimator - Wikipedia

   en.wikipedia.org/wiki/Autocollimator

   An autocollimator works by projecting an image onto a target mirror and measuring the deflection of the returned image against a scale, either visually or by means of an electronic detector. A visual autocollimator can measure angles as small as 1 arcsecond (4.85 microradians), while an electronic autocollimator can have up to 100 times more ...

3. File:Angle measure.svg - Wikipedia

   en.wikipedia.org/wiki/File:Angle_measure.svg

   $ tex Angle_measure.tex && dvips -E Angle_measure.dvi; Outline fonts $ eps2eps -dNOCACHE Angle_measure.ps Angle_measure2.eps; Fix bounding box $ ps2epsi Angle_measure2.eps Angle_measure.eps; Convert to Sketch $ pstoedit -f sk Angle_measure.eps Angle_measure.sk; Convert to SVG $ skconvert Angle_measure.sk Angle_measure.svg; Fix Angle_measure.svg ...

4. Goniometer - Wikipedia

   en.wikipedia.org/wiki/Goniometer

   A protractor is a measuring instrument, typically made of transparent plastic, for measuring angles. Some protractors are simple half-discs or full circles. More advanced protractors, such as the bevel protractor, have one or two swinging arms, which can be used to help measure the angle. Most protractors measure angles in degrees (°).

5. Glossmeter - Wikipedia

   en.wikipedia.org/wiki/Glossmeter

   For example, if the measurement made at 60° is greater than 70 GU, the measurement angle should be changed to 20° to optimise measurement accuracy. Three types of instruments are available on the market: 60° single angle instruments, a combination of 20° and 60° and one type that combines 20°, 60° and 85°.

6. Rotary encoder - Wikipedia

   en.wikipedia.org/wiki/Rotary_encoder

   Rotary encoder for angle-measuring devices marked in 3-bit binary-reflected Gray code (BRGC). The inner ring corresponds to Contact 1 in the table. Black sectors are "on". Zero degrees is on the right-hand side, with angle increasing counter-clockwise. To avoid the above problem, Gray coding is used. This is a system of binary counting in which ...

7. Transparency meter - Wikipedia

   en.wikipedia.org/wiki/Transparency_meter

   A transparency meter, also called a clarity meter, is an instrument used to measure the transparency of an object. Transparency refers to the optical distinctness with which an object can be seen when viewed through plastic film/sheet, glass, etc. In the manufacture of sheeting/film, or glass the quantitative assessment of transparency is just ...

8. AOL Mail

   mail.aol.com

   Get AOL Mail for FREE! Manage your email like never before with travel, photo & document views. Personalize your inbox with themes & tabs. You've Got Mail!

9. Tiltmeter - Wikipedia

   en.wikipedia.org/wiki/Tiltmeter

   A newer technology using microelectromechanical systems (MEMS) sensors enables tilt angle measuring tasks to be performed conveniently in both single and dual axis mode. Ultra-high precision 2-axis MEMS driven digital inclinometer/ tiltmeter instruments are available for speedy angle measurement applications and surface profiling requiring very ...