Ex broadcast equipment but of course useable anywhere that you need a good secure knob to fit either a flat side shaft or all circular shaft without using a grub screw.
Collet knobs are often used in professional equipment because there is no spline fitting or grub screws which will become loose over time.
These knobs have an all metal centre (usually brass) fitting which grips the control shaft tightly when the topside nut is turned. Once secured they stay that way!
Another advantage of these knobs is that the top cap can be changed for various colours although I only have Red or Blue at the moment.
To access and fit a collet knob ...
Flip off the knob top cap, carefully unscrew the central bolt and the knob will then slide easily off the component shaft. Refitting a collet knob is the reverse procedure.
All brass grip mechanism
Red or Blue top cap with a Black body - there is NO pointer line
Dimensions: (measured with digital calipers)
20mm OD
18mm body length
Top cap that suits has an internal circle of fingers that grip the knob and these are 15.4mm OD & 15.3mm ID
COSMETIC CONDITION:
Clean
Unscratched
Undamaged in any way
