The manganese steel coding ruler body is made of 6065 high-strength aluminum alloy. Its design ensures that it is not prone to deformation during use and is easy for the measurer to carry and use. The ruler tape is made of manganese steel. The specification of manganese steel is 0.4x43mm. The wire The expansion coefficient is per meter
per meter (the national standard is
per meter), and in There is a 3kg tension on the top of the tape to ensure that it is minimally affected by the external environment during normal use. The tape is painted with high-temperature paint (durable and non-fading), and a high-energy laser beam is used to paint the upper paint layer. Vaporizes, the base paint is exposed, and stripes are formed, which can be used for national third- and fourth-class leveling measurements. Currently, there are 2m and 3m manganese steel rulers, which can also be customized according to user needs.
The specific technical parameters of manganese steel code ruler are shown in the following table:
serial number | project | unit | Technical parameters |
1 | Correct installation of circular level on barcode ruler |
| When the barcode ruler is vertical, the horizontal bubble is centered |
2 | Curvature of barcode sizing plane | mm |  4
|
4 | Barcode length correction number | mm |  0.1
|
5 | Ruler marking standard deviation |  m
|  30 (high precision standard deviation 10 )
|
6 | Barcode ruler zero spread | mm |  0.05
|
7 | Zero point difference between a pair of barcode rulers | mm |  0.1
|