Art.590 – Control square in black granite

Control squares in black granite used for checking perpendicularity. Made to extremely small tolerances. Stability of rest. The larger squares are bored to decrease weight. Lapped surfaces. Top quality finishing.

CODE
SIZE
(mm)
PLANARITY TOL.
(µm)
PARALLELISM TOL.
(µm)
01
200x150x30
± 2,4
±2
02
300x200x40
± 2,6
±2
03
400x250x50
± 2,8
±2
04
500x315x60
± 3
±3
05
630x400x60
± 3,2
±3
06
800x500x80
± 3,6
±4
07
1000x630x100
± 4
±4
08
1500x1000x160
± 6
±6