4 X 2-3/4 X 1/7" BASE BLOCK FOR RECTANGULAR GAGE BLOCKS (4101-0601)

4 X 2-3/4 X 1/7" Base Block Measures 4" Length by 2.750" width by 1/7" height. Made with gage block accuracy. For use with rectangular gage blocks. Base block's mounting surface lapped flat and parallel with base. Shipping Weight: 2.65 lbs