Tower ruler (leveling staff) calibration special sample ruler

1、 Product Introduction

The SYTB-1 tower ruler (leveling staff) special sample ruler is designed and manufactured by Ningbo Shenyan Measuring Instrument Testing Instrument Co., Ltd. according to the "JJG 8-1991 Leveling Staff Calibration Regulations", and is used as a special template for measuring the marking error of the scale at the connection point of the tower ruler.

2、 Technical features:

Made of high-quality special steel, with high stability and small deformation.

The scale values are precisely laser engraved with high precision.

3、 Technical parameters:

1. Measurement range: 0-170 mm

2. Full length indication error: ± 0.15mm

4、 Verification method:

Firstly, place the ruler on its side, and then draw a thin straight line at both ends of the ruler. Measure the distance of this thin line on the differentiation surface of the ruler at both ends and in the center. The difference between the average readings at both ends and the middle reading is the bending difference.