When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Antique 1920s Weston Model 425 RF Thermo-Milliammeter Panel Meter Ham Radio
Description
Item Overview
Up for sale/sale is an authentic antique Weston Model 425 Radio Frequency Thermo-Milliammeter, manufactured by the Weston Electrical Instrument Corp. in Newark, New Jersey.
This classic panel meter features an internal thermocouple mechanism designed to accurately measure high-frequency radio currents (0 to 120 mA range). The faceplate displays a sequence of historical patent dates along the top rim, with the latest dated February 21, 1922, placing its manufacture around the late 1920s to 1930s.
Specifications & Details:
Manufacturer: Weston Electrical Instrument Corp., Newark, N.J., U.S.A.
Model: 425
Serial Number: 48718
Scale Range: 0 – 120 RF Milliamperes
Internal Resistance: 5.2 Ohms
Dimensions: Standard 3-inch flush-mount panel bezel with rear terminal studs
Material: Bakelite / metal casing with glass faceplate cover
Condition:
Cosmetic: Good vintage condition with light wear, scuffs, and minor patina consistent with age. The dial print remains clear, legible, and easy to read. Glass is intact.
