Mitutoyo-SERIES 157-Optical Parallels

MITUTOYO-SERIES 157-OPTICAL PARALLELS

Designed to inspect parallelism and flatness of measuring faces of micrometers. For details, refer to “Quick Guide to Precision Measuring Instruments”. Each set consists of 4 sizes to aid in testing parallelism at various angular positions of the micrometer spindle. SPECIFICATIONS Metric Order No. Range of micrometer to be checked Sizes of parallels included in set Diameter Flatness

Optical Parallels

Designed to inspect parallelism and flatness of measuring faces of micrometers. For details, refer to “Quick Guide to Precision Measuring Instruments”.
Each set consists of 4 sizes to aid in testing parallelism at various angular positions of the micrometer spindle.

SPECIFICATIONS

Metric

Order No.	Range of micrometer to be checked	Sizes of parallels included in set	Diameter	Flatness	Parallelism	Remarks
157-903	0 – 25mm	12.00, 12.12, 12.25, 12.37mm	030	0.1µm	0.2µm	For 25mm
157-904	25 – 50mm	25.00, 25.12, 25.25, 13.37mm	030	0.1µm	0.2µm	For 50mm

Inch

Order No.	Range of micrometer to be checked	Sizes of parallels included in set	Diameter	Flatness	Parallelism	Remarks
157-901	0 – 1″	.5000″,.5062″, .5125″, .5187″	030	0.1µm	0.2µm	For 25mm
157-902	1 – 2″	1.0000″, 1.0062″, 1.0125″, 1.0187″	030	0.1µm	0.2µm	For 50mm