- 1-2-3 Blocks—tolerances guaranteed to .0001" for squareness per inch
- Available in two styles—with one or thirty-one holes. Blocks are matched in pairs and measure 1" x 2" x 3"
- Very useful in mounting work for precision grinding, layout work, etc
- Blocks hardened to 58-60 Rockwell C
- Ground to surface finish 6-10 micro-inches
- Matched accuracy within ± .0002"
IDEAL PRECISION INSTRUMENT SERVICE, INC.YOUR SINGLE SOURCE FOR PRECISION INSTRUMENTS, GAGING AND REPAIR.