52-439-031-0

• 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 microinches

• Matched accuracy within ± .0002"

• Price per pair