![VERNIER CONTROL KNOB & REDUCTION DRIVE. 1/4\](img-large/g/ucMAAOSwQLVcNVBc/s-l1600/VERNIER-CONTROL-KNOB-REDUCTION-DRIVE-1-4-SHAFT-1-5.jpg "VERNIER CONTROL KNOB & REDUCTION DRIVE. 1/4\")
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VERNIER CONTROL KNOB & REDUCTION DRIVE. 1/4\" SHAFT, 1.5\" DIAL DIAMETER.:
$17.00
This is your opportunity to acquire one of the hard-to-find 1.5\" diameter vernier knobs, newly manufactured. While once these were plentiful in radio and electronics stores of the Sputnik era, they, and the stores that carried them, have largely vanished. These though, are highly sought after by crystal radio experimenters and ham radio enthusiasts. Coupler inside diameter 0.255\", accepting a 1/4\" (6.3mm) shaft, this vernier has a smooth 7:1 reduction ratio, and is numbered 0-10 over a 300 degree travel. Limited supply on hand. Hardware included.
