Ultra Electronics Measurement Systems Inc Heavy Duty, Displacement, Hand Operated Model 546

Inherently rugged and work smoothly without loss of precision throughout operational life. The direct coupling of the handle and the shaft of the potentiometer without the use of gears or linkages means the backlash is reduced to a minimum. Also, the spring levers allow the user a choice of various operating forces by simply changing two standard extension springs. The materials used in the construction – anodized aluminum alloy, stainless steel shaft and sintered bronze sleeve bearings – allow the product to easily withstand severe environments including salt spray, humidity and dust.