Reduce Scrapping and Smelting, Promote Component Reuse > Complete Machines
> 1960 1980
> Cook County
> New
> New 1/4 inch precision parallel set (9 pair)-
New 1/4 inch precision parallel set (9 pair)-
* 9 Pairs/set Width: 3/4", 7/8",1",1-1/8",1-1/4",1-3/8",1-1/2",1-5/8" &1-3/4"
* Made from fine quality tool steel stress relieved against distortion precision ground and hardened
* Used for layout work, standards and set-up
* Tolerance: parallel to .0003" on 2 sides, top and bottom
* Hardness: case hardened to HRC 55~62 on 2 sides, top and bottom only
* Supply with fitted durable plastic case
