2 Vintage Panel Meters With Classic Box Triplett Model 321-1 Readrite D.C.
Triplett Model 321-1 D.C. Amperes panel meter, which is an analog electrical test meter.
Product Details
Brand: Triplett Electrical Instrument Company (founded in Bluffton, Ohio)
Model: 321-1
Function: Measures direct current (D.C. Amperes)
Scale: The full-scale reading is up to 1200 Amperes.
Movement: It is a 50 mV (millivolt) movement meter, meaning it requires an external current shunt that provides a 50 mV output at 1200 Amperes to function correctly with the scale shown. Ammeters designed for currents over 50 Amperes typically use such an external shunt system.
Vintage: Triplett has been manufacturing such panel meters for decades, with the company founded in 1904.
Patents: The face lists patents 2,346,521 and 2,364,724, which date to the 1940s.
Company Information
Triplett is a well-known manufacturer of quality testing tools with a long history in the United States, currently owned by Jewell Instruments. They are famous for their robust and reliable analog meters, such as the Model 310, which is still in production today.
D.C. Amperes panel meter made by Readrite Meter Works in Bluffton, Ohio, USA.
Product Information
Manufacturer: Readrite Meter Works
Location: Bluffton, Ohio, USA
Type: D.C. (Direct Current) Ammeter (measures current in amperes)
Range: The scale on the dial indicates a range from 0 to 3 Amperes
Typical Use: Meters like this were commonly used in early radio test equipment, educational electronics kits, and industrial control panels from the mid-20th century.
Collectibility: Readrite meters are well-known among collectors for their durable, classic design.
Selling as pictured.
More than welcome to pick up at shop in Butler PA & save shipping.
013026-JM9