Page 200 - TesaKatalogen

Diameter and L e ng t h a nd Ang l e S t a nd a r ds
thickness as
shown in table Accessories for gauge blocks
Optical flats
with 2 flat The interference lenses allow visual inspection of the surface of the gauge blocks.
measuring faces.
No guaranty can TESA Optical Flats
be given
for parallelism. Used for examining flatness and adhesion of gauge blocks or any other test
pieces having flat faces with same high grade of accuracy.

02530050 mm Thickness, mm μm
02530075 50 15 0,125
75 20 0,125

Light source: TESA Monochromatic Light Unit
35 W sodium lamp,
89% monochro- For use with optical flats or optical parallels to measure both the flatness and
matic, parallelism of the measuring faces by interferometry.
colour yellow, Monochromatic light source providing high-contrast interference fringes.
wavelength This light unit uses a single wavelength so that bright/light fringes only are
0,575 μm visible.
Surface plate: The light source at the rear of the case also permits a visual examination, e.g.
0,5 μm with the aid of a knife-edge or bevelled straight edge.

Surface plate:
2,5 μm
406 x 406 x
355 mm
(W x D x H)
Surface plate in
hardened steel

Case in
lacquered wood

0652500422 Universal monochromatic light V
210 ÷ 230
Standard accessories:
0651570269 200 mm dia. surface plate,

lapped and polished measuring face
0652500424 Sodium light bulb (spare lamp)

K-7