Page 379 - Schut Catalog
P. 379
Schut Geometrical Metrology OPTICAL FLATS / PLAN PARALLEL OPTICAL FLATS
Select optical flats
Optical flats can be used for inspection of the flatness of reflecting surfaces of for example gauge
blocks, settings gauges and other lapped surfaces by optical interference.
Flatness measuring faces: ≤ 0.10 µm. l l
Wedge angle error: > 10.0' (optical flats, l l
double sided). L
On request with a DAkkS certificate, L
UKAS acknowledged. A B M
Delivery in an aluminum case. LL
optical flat L L
measuring face αα fig. 3
surface fig. 1 fig. 2
to be tested
Item No. Diameter Thickness Price EUR
mm mm
Single optical flats, single sided:
826.625 30 15 87.00
15 150.00
826.626 45 20 179.00
20 241.00
826.627 50 20 264.00
826.628 60
826.629 75
Single optical flats, double sided:
827.011 30 15 121.00
15 179.00
826.631 45 20 227.00
20 250.00
826.632 50 20 304.00
826.633 60
826.634 75 827.011
Select plan parallel optical flats
Plan parallel optical flats can be used for inspection of the parallelism and flatness of measuring
surfaces of micrometers and other measuring instruments. Each set consists of 4 sizes plan parallel
optical flats for inspection of micrometers on every fourth rotation of the spindle.
For micrometers with a spindle pitch 826.635
of 0.5 mm.
Sets for micrometers with a measuring range
of 0 - 25 mm, 25 - 50 mm, 50 - 75 mm and
75 - 100 mm.
Diameter: 30 mm.
On request with a DAkkS certificate,
UKAS acknowledged.
Delivery in an aluminum case.
Item No. Thicknesses/mm Flatness Parallelism Price EUR
measuring faces: measuring faces:
826.635 352.00
826.636 12.00 / 12.12 / 12.25 / 12.37 ≤ 0.15 µm ≤ 0.3 µm 516.00
827.873 25.00 / 25.12 / 25.25 / 25.37 ≤ 0.15 µm ≤ 0.3 µm 718.00
827.874 50.00 / 50.12 / 50.25 / 50.37 ≤ 0.20 µm ≤ 0.5 µm 939.00
75.00 / 75.12 / 75.25 / 75.37 ≤ 0.20 µm ≤ 0.5 µm
Option: 144.00
826.630 Single plan parallel optical ≤ 0.15 µm ≤ 0.3 µm C09.314.EN.20250106
flat, thickness 12.00 mm
© 2025, Schut Geometrische Meettechniek bv 379 Measuring instruments and systems 2023/2024
