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Length Standards

We at Length Standards Group provide calibration services of gauge blocks, line standards, electronic distance meters (EDM), laser interferometer, refractive index of glasses, step heights, flatness, straightness, and sphericity. Inspection of verification standards of tape measure standards is also done. Details of the calibration services such as measurement range, expanded uncertainty are shown in the pages of each item.

Please contact our Metrology Quality Office if you have any questions.

Items of Length Standards

Details such as calibration range and uncertainties are shown in each item's page.

Picture of gauge blocks

Gauge Blocks

Picture of line scales

Line Scales

Picture of electronic distance meter

Electronic Distance Meters

Picture of laser interferometer

Laser Interferometers

Picture of prisms

Refractive Index

Picture of gauge blocks

Step Height

Picture of Fizeau interferometer

Flatness

Picture of ultra-high-accuracy surface profiler

Straightness

Principle of sphericity standard

Sphericity

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Items of Inspection of Verification Standard

For details such as calibration range and uncertainties, please contact us.

No Image

Tape Measure Standards

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