{"product_id":"155277","title":"MS3T","description":"\u003cp\u003eEARLY 1960'S ELECTRIC HEATING COMPUTER PANEL METER 0-40KW VS. 0-700 COST - NEW IN BOX - SIZE 3.5\"X4.1\" - RARE COLLECTIBLE EARLY COMPUTER METER - MADE IN USA - The early Honeywell MS3T panel meters (and the similar MS3 series) were heavy-duty analog instruments used primarily in industrial monitoring, communications, and electronic test equipment throughout the 1960s. Produced by Honeywell's Marion Instrument Division, they were prized for their reliability in high-usage environments.\n\u003cbr\u003eSpecific applications for the MS3T included:\n\u003cbr\u003eVacuum Tube Testers: The MS3T movement was a standard component in high-end tube testers (such as those from Wilkinson Electronics), where it monitored plate current and grid voltage to verify the health of radio and television tubes.\n\u003cbr\u003eRadio and Broadcast Equipment: They were used as percent power gauges and ammeters in large radio transmitters and broadcast consoles to ensure signal output remained within legal and technical limits.\n\u003cbr\u003eIndustrial Control Panels: In factories, MS3T ammeters (typically measuring 0–30 DC Amperes) monitored the electrical load of motors, industrial heaters, and heavy machinery to prevent overloads.\n\u003cbr\u003ePower Supplies \u0026amp; Battery Chargers: These meters were common on the front panels of commercial-grade DC power supplies to provide real-time voltage and current readings.\n\u003cbr\u003eAerospace \u0026amp; Military Gear: Because the \"T\" in the model name often signified specific ruggedization or terminal styles, they were frequently found in ground support equipment for aviation and in military-spec portable testers\u003c\/p\u003e","brand":"HONEYWELL","offers":[{"title":"Default Title","offer_id":45276258926645,"sku":null,"price":225.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0219\/7936\/5440\/files\/AP1GczOMHcaNcFFdLr4Vv0RqRei6N8QbdZnrX0Bfd69YR5y2DY832y3DS20-B69LLY9DNBG2_ISPshADOc0LfQE7CkNPpHkBsIqOQEysror7MRplfXwyRIN0MHxL1nA9Rrqz-7yV7ePFVpPJuWaH9Etf-yHkxA_w1722-h1722-s-no-gm.jpg?v=1780534044","url":"https:\/\/greenbrookonline.com\/products\/155277","provider":"Green Brook Online","version":"1.0","type":"link"}