Vishay Spectrol 15-1-11 Multiturn Knob 22mm.
15-A-11
Features:
Rectangular digital staircase
Width 1 "
1/4 "or 1/8" or metric adapter (6 mm)
Open bezel or transparent plastic
Black anodized finish with standard or white bezel
Anodized light gray finish
Dimensions: 25.4mm x 49.5mm