Cylinder Squares

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These squares are hardened, and the ends
are lapped to 90° angular accuracy with the
cylinders as follows: 6” square to ± .00010”,
12” square to ± .00015”. Includes fitted case.
![]() |
These squares are hardened, and the ends
are lapped to 90° angular accuracy with the
cylinders as follows: 6” square to ± .00010”,
12” square to ± .00015”. Includes fitted case.