Dimension Standards

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Calibrated Device (1) Standard Tape)
(2) Level Staff
(3) Invar Bar Code Staff) 
Range 0 m~10 m 
Uncertainty (1) [4.032+(2.88L)2+(1.27+Sj)2]1/2 μm
(2) [82+(7L)2]1/2 μm
(3) [4.12+(2.9L)2+(1.3+Sj)2]1/2 μm
L unit: m 
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