Precision 4-Sided Machinist Straight Edge 200mm / 8" USSR

Description

For sale 1 pcs. of great Precision 4-Sided Machinist Straight Edge 200mm / 8" USSR 1982 year
Length: 200mm / 8"
Grade 1
Straightness tolerance 1.25µm=0.00125mm=0.000049 inch
Roughness 0.04 Ra, Hardness 59-61 HRC
in the photo you can see the four sides of the ruler
Weight: 0.75kg
Made in USSR - realy great quality!