Analog Panel Meter 750 Ohm / Volt Full Scale3-1/2 Inch “V” Shaped Window Mount Volt Ohm Analog Panel Meter.Movement: 750Ohm per Volt Full Scale.Meter Scale: 0-100 Volts with 2 Volt division marks / 0-100 dB with 2 dB division marks (Black scale)Ohms Scale: 0, 10, 20, 50, 100, 200, 500, 1K, 2K, Infinity with nonlineardivision marks (Red scale)Panel Cut Out Dimensions: 3.58″ (Width) x 1.57″ (Height)Maximum Dimensions: 3.72″ (Width) x 2.825″ (Height) x 1.40″ (Depth)Zero Adjustment is on FrontBarrel is 1″ Diameter2 Mounting Holes will Accept # 4 Screws with 2″ Center.Meter Terminals on Case are ~ 0.11″ (W) x 0.02″ (Thick) x 0.5″ (Long) Quick Connect or Solder.Modutec / Jewell453-246