Large Vernier Dial Control Knob HF LINEAR AMPLIFIER Antenna Coupler from 60s

One (1 pcs) old, vintage, genuine Vernier Dial Knob for Linear Amplifiers and Antenna Tuners, Dismantled from professional military high power transmitter. They aren't cleaned and they have some scratches, but they are in perfect working condition. Ball bearing, lockable, hi quality product from 60s.