Special sample ruler for leveling staff

JJG 8 typeSpecial sample ruler for leveling staff

JJG 8 type leveling tower ruler special sample ruler

1、 Product Introduction:Special sample ruler for leveling staffUsed for measuring the marking error at the connection point of tower rulers, developed in accordance with the requirements of the "JJG 8-1991 Calibration Regulations for Leveling Rulers", with a total length indication error of ± 0.15mm

2、 Verification method: First, place the ruler on its side, and then draw a thin straight line at both ends of the ruler. Measure the distance between the two ends of the ruler and the dividing surface of the ruler to determine the distance of this thin line. The difference between the average readings at both ends and the middle reading is the bending difference.

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