Vintage USSR Precision 3-Sided Machinist Straight Edge 320mm / 12.59"
Straight-line verification is designed to test flat surfaces
using light slits - the light, directly determined by eye.
Permissible deviation from straightness - 0,0016 mm
Dimensions - 320 mm/ 12.59"
Material- instrumental alloyed steel.
Equipped with a handle with insulating plates.
Precision 3-Sided Machinist Straight Edge 320mm/12.59" "Manufactured in the
Chelyabinsk Tool Factory in 1975. This Precision 3-Sided Machinist
Straight Edge has the highest accuracy class 1 Precision 3-Sided Machinist Straight is sold in oiled paper in the original wooden case. In the photo, you can see four sides of this straight
edge.
God bless you !