Material

High-strength, reinforced phenolic based (PF) Duroplast, black colour, glossy finish.

Ring

Matte anodised aluminium (ELESA original design).

Graduation ring

Matte anodised aluminium with black marks and numbers. Left-hand graduation (it increases as handwheel is turned clockwise) with 0, 10, 20... 90 numbering (100 dividing marks).

Standard execution

Black-oxide steel hub, H7 reamed hole with keyway.

Fold-away handle IR.302 in Duroplast.

Hole for blocking the adjustment

Brass boss at a distance R from the centre: hole (f) can be threaded M6 and used to couple other blocking elements.