Fowler 53-672-081-0 81 Piece Economy Rectangular Gage Block Set

An economy version of deluxe Fowler Gage Block Sets, featuring ±.000050" (fifty millionths) accuracy and a very significant price savings.Fowler "Economy/Workshop" grade Gage Block Sets are identical to standard sets in all respects, except for the wider range of tolerance which is more than adequate for a majority of shop needs.  Blocks are rectangular, constructed of the finest grade of high carbon/chrome steel, fully stress relieved, hardened to 65 RC, lapped and mirror polished to a very low micro-surface finish.  Blocks feature a low coefficient of thermal expansion, and they are carefully inspected for accurate size, parallelism and flatness.

Features:

• ±0.000050" accuracy for a lower price, each department can now have their own set.
• Standard industrial sizes ensure complete interchangeability with all accessories.
• Each set complete with deluxe fitted case and Certificate of Inspection traceable to the National Institute of Standards & Technology.
• Blocks included in each set:
• 9 Blocks 0.1001'' thru 0.1009'' step of 0.0001''
• 49 Blocks 0.101'' thru 0.149'' step of 0.001''
• 19 Blocks 0.050'' thru 0.950'' step of 0.050''
• 4 Blocks 1.000'' thru 4.000'' step of 1.000''