The interference lenses allow visual inspection of the surface of the gauge blocks TESA Optical Flats Used for examining flatness and adhesion of gaug

The interference lenses allow visual inspection of the surface of the gauge blocks. TESA Optical Flats Used for examining flatness and adhesion of gauge blocks or any other test pieces having flat faces with same high grade of accuracy. TESA Technology mm Thickness mm pm 02530050 50 15 0125 02530075 75 20 0125 G O 0 Light source 35 W sodium lamp 89% monochromatic colour yellow wavelength 0575 pm Surface plate 05 pm Surface plate 25 pm 406x406x 355 mm (W x D x H) Surface plate in hardened steel Case in lacquered wood See table Suited carrying case TESA Monochromatic Light Unit For use with optical flats or optical parallels to measure both the flatness and parallelism of the measuring faces by interferometry. Monochromatic light source providing high-contrast interference fringes. This light unit uses a single wavelength so that bright light fringes only are visible. The light source at the rear of the case also permits a visual examination e.g. with the aid of a knife-edge or bevelled straight edge. V 0652500422 Universal monochromatic light 210 230 standard accessories 0651570269 200 mm dia. surface plate lapped and polished measuring face 0652500424 Sodium light bulb (spare lamp) TESA Diameter and thickness as shown in table Optical flats with 2 flat measuring faces. No guaranty can be given for parallelism. Wooden case Declaration of conformity LENGTH AND ANGLE STANDARDS ACCESSORIES FOR GAUGE BLOCKS