Manufactured to German DIN 875/1 standards, designed for precision layout, machine set-up and laboratory use
This square set is made of 45# steel, hardened, tempered, beams and blades are lapped and polished for straightness and parallelism; The blade is permanently fixed to the beam by means of tapered self locking rivets which ensure complete rigidity
Squares are true right angles both inside and outside
Set includes 2 inch, 3 inch, 4 inch and 6 inch square
The included plastic case...