101 / 629
Optical parallels
Specifications
Flatness
0,1 µm
Parallelism
0,2 µm
Diameter
30 mm
Series 157
These Optical Parallels allow you to inspect micrometers and other measuring tools.
They offer the following benefits:
– Using optical interference, they can inspect the measuring faces of micrometers for parallelism
and flatness.
– Each set consists of 4 sizes designed for testing at each quarter revolution.
157-903
Metric
No.
Contents Range of micrometer to be checked Sizes of parallels included in set
157-903
157
‑
101
157
‑
102
157
‑
103
157
‑
104
0-25 mm
12 mm
12,12 mm
12,25 mm
12,37 mm
157-904
157
‑
105
157
‑
106
157
‑
107
157
‑
108
25-50 mm
25 mm
25,12 mm
25,25 mm
25,37 mm
Testing a micrometer for flatness and parallelism of anvil and spindle faces : flatness is indicated by straightness
and regular spacing of interference fringes, and parallelism by how many fringes are visible.
All products to be sold to commercial customers. Product illustrations are without obligation. Product descriptions, in particular any and all
technical specifications, are only binding when explicitly agreed upon. For suggested retail prices, please refer to the separate price list.
101