BI (BECKMAN) - 57-83-0R10K – Helitrim Model 57 Trimming Potentiometer, 10K Ohm. 10-Turn.

BI (BECKMAN) - 57-83-0R10K – Helitrim Model 57 Trimming Potentiometer, 10K Ohm. 10-Turn. Potentiometers regulate the flow of electricity, like the volume dial on a radio. In 1940, Arnold O. Beckman was unsatisfied with dials on the market, so he designed his own helical potentiometers, or helipots, for use in his popular pH meter. The precision of this dial caught the eye of the MIT Radiation Laboratory’s secret radar project during World War II. Beckman redesigned the helipot to meet the needs of the United States military and set up a separate company, also called Helipot, to keep up with the demand for these knobs. In the 1950s, Helipot was reincorporated into Beckman Instruments as the Helipot Division and continued to make potentiometers and other electrical components for decades, those tiny dials becoming staples of the electronics manufacturing industry. Status: Discontinued Resistor, Trimming. Resistance: 10K Ohm. 10% Number of Turns: 10-Turn. Power: 1 Watt Adjustment: Side Adjustable. Shaft: ¾” Long Shaft. Mount: PCB 3 pin. Or Side Bolt Dimensions: Rectangular 1-1/4" Body Length Vintage: 1950 – 1969 Alternates / Similar Replacement: Bourns 3057P-717 22 Turn Trimpot (Lead Position is Different), Bourns 2010-1-103, Amphenol 2750PS1086-7 Note: If/When Substituting components compare specification to your application. Made in USA New Old Stock - Rare – Genuine Vintage Beckman Helitrim Model 57