Q.V.S. Inc MOD-450R AC DC Ohm Meter Movement 2012 Ohm 4.5" Panel Round

Q.V.S. Inc MOD-450R AC DC Ohm Meter Movement 2012 Ohm 4.5" Panel Round

The Q.V.S. Inc MOD-450R is an analog panel meter movement calibrated to measure resistance on both AC and DC circuits. It features a 4.5-inch round housing designed for flush panel mounting and a coil movement resistance of 2012 ohms with a full-scale deflection of 60. The face reads "A.C. & D.C." and carries a multi-range ohms scale with arcs covering ranges from 0 to infinity.

Specifications & What's Included

• Brand: Q.V.S. Inc
• Model: MOD-450R
• Part Number: LP-901
• Measurement type: Resistance (Ohms)
• Current compatibility: AC & DC
• Movement (coil) resistance: 2012 ohms
• Full-scale deflection: 60
• Panel diameter: 4.5 inches (round)
• Form factor: Panel-mount (flush bezel)
• Connection: Two rear solder terminals with red insulating rings
• Rear label: "SEALED — DO NOT OPEN" (label appears intact)
• Scale: Multi-range ohms arcs (0–5, 0–20, 0–100, 0–500 and extended ranges visible on face)
• Meter movement only — no test leads or external hardware included

Applications

Panel meter movements like the MOD-450R are the sensing and display elements used inside analog ohmmeters, multimeters, and custom test instruments. They convert electrical current through the coil into a proportional needle deflection, allowing resistance to be read directly from a printed scale. This particular movement is designed for both AC and DC ohms measurement, making it suitable for integration into instruments that need to read resistance on either current type. Panel meters of this style were widely used in industrial controls, laboratory instruments, and custom-built test benches from the mid-twentieth century onward, and they remain in use today wherever a rugged, visible analog readout is preferred over a digital display. The 4.5-inch round format is a standard panel-mount size that fits common cutouts in instrument enclosures and switchboards. Typical buyers are instrument builders, repair technicians restoring vintage test equipment, and engineers building custom panel-mounted monitoring instruments.