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NATIONAL MEASUREMENTS STANDARDS > STANDARDS > Length
Length

| WAVE LENGTH STANDARD 633nm |
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Category
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Quantity
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Unit
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length
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Length
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Metre
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Standard Description
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Value, range
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Uncertainty
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Hewlett Packard Reference Laser Interferometer
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633nm
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0.1ppm (k=2)
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| LENGTH STANDARD 0 - 100mm |
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Category
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Quantity
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Unit
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length
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Length
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Metre
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Standard Description
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Value, range
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Uncertainty
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Set of Grade K gauge blocks
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0 to 100mm
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30 -90 nm (K=2)
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| THREE COORDINATE MEASUREMENT STANDARD |
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Category
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Quantity
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Unit
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length
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Length
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metre
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Standard Description
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Value, range
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Uncertainty
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Retter Ball Beam
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Dist.1 225mm
Dist.2 540mm
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0.3μm + 0.6x10-6 xL (K=2)
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| ANGLE STANDARD |
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Category
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Quantity
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Unit
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Length
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Angle
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Radian
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Standard Description
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Value, range
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Uncertainty
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Set of 16 angle gauges
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4.848 x 10-6 to 0.7854 radians
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1 x 10-6 Radians (k=2)
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