Small Gray Tektronix TEK knobs, Assorted styles, Sold in pairs

Tektronix TEK knobs - Assorted, Round

Tektronix TEK knobs, round, 1/8" shaft, light grey

Tektronix TEK knobs, round, 1/8" shaft, open top, dark grey, recessed insert

Tektronix TEK knob, dark grey, 3/4" diameter, 1/4" shaft, open top

Black Instrument Control Knobs with White Marker 1/4" Shaft Tektronix

Tektronix TEK knobs, round, 1/8" shaft, open top, dark grey

HP and Tektronix knobs, you choose, some from the HP435B others from Tek scope