Type A - With knob, blackened, without scale.
Type AS - With knob, matt chrome plated, with standard scale 0 - 50, 60 graduations.
Type B - With one tension lever.
Type C - With two tension levers.
GN200 Indexing mechanism.
These indexing mechanisms, GN 200, replace and simplify complicated indexing and safety mechanisms.
They can be supplied blank or with standard scale.
Should a different graduation be required to the standard scale, please see Indexing Mechanisms, custom. which are available for customisation.
Steel - blackened.
Type AS - control knob matt chrome plated, scale engraved with laser precision, black, reference line on location ring.
Keyway P9 DIN 6885/1 for bore K 10, Keyway P9 DIN 6885/2 for bores > K 10
GN539 Fixed cylindrical handles (Plastic, Technopolymer black, shiny finish).