Art.385 – Precision straight edge in granite

High precision plane-parallel control ruler in black granite. Two parallel, plane, lapped faces with << I >> -shaped section for stability and lightness. The parallelism tolerance is equal to the planarity tolerance.
 
 
CODE
LENGHT
(mm)
SECTION
(mm)
PRECISION
(mm)
01
500
50 x 80
±0,003
02
750
50 x 100
±0,0035
03
1000
60 x 140
±0,004
04
1500
80 x 180
±0,005
05
2000
100 x 220
±0,006