Optical Flats Parallel Sets
OPTICAL FLATS PARALLEL SETS - PARALLEL TO .000004"
Type of SetSizeEDP No.
Set Op-2AA, two parallels1" x 1/2"V839901
Set Op-2B, two parallels1-1/4" x 1/2" V839903
Set Op-2C, two parallels1" x 1"V839905

Flats in optical parallel sets differ in thickness by approximately 0.0125”, providing a parallelism check at two spindle positions, each one-half turn apart. For metric micrometers, the difference is 0.25 mm.

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