Technical Data:
Accessory type: Interchangeable back cover
Configuration/application: Back with Adjustable Bracket, approx. 20 mm travel

Dimensions:
Travel range: approximately 20 mm
Main-unit drawing: 50.2, 7, 18.5, Dia.7.1, Dia.10.5, 38, 25.5, 38 and 16 mm; supplied 3/32 in hex wrench used for fine adjustment and clamp screws.

Remark:
Most lugged back covers can be rotated 90 deg because they use four retaining screws. 190561 and 137905 have two retaining screws and their lug orientation cannot be changed. Replacing the back cover of a water-proof model voids the water-resistance guarantee where noted by the catalogue.