Glass-fibre reinforced polyamide based (PA) technopolymer, black colour, glossy finish.
Acetal resin based (POM) technopolymer, light-grey colour, push-fit assembly, removable by pressing on the outer edge (ELESA original design).
Black-oxide steel boss, H7 reamed hole.
Assembly by means of a keyway or a transversal pin in the semi-machined hole f or a set screw (redrill and tap hole f).
- IZN.380+K: knob with matte anodised aluminium flange, triangular black index.
- IZN.380+FGS: knob with matte anodised aluminium flange, black graduation (marks and numbers).
- FGS 10/40 = 40 marks, numbering from 0 to 9 increases as the knob is turned clockwise.
- FGS 10/100 = 100 marks, numbering from 0 to 9 increases as the knob is turned clockwise.