{"product_id":"vintage-jbt-model-31-fx-50-frequency-meter-48-52-hz","title":"Vintage JBT Model 31-FX-50 Frequency Meter (48-52 Hz)","description":"\u003cdiv class=\"Y3BBE\" data-sfc-cp=\"\" jsaction=\"rcuQ6b:\u0026amp;YT85be_f|npT2md\" jscontroller=\"zcfIf\" jsuid=\"YT85be_f\" data-hveid=\"CAEIAhAA\" data-complete=\"true\" data-processed=\"true\" style=\"line-height: 24px; overflow-wrap: break-word; margin-block: 12px 16px; background-color: rgb(255, 255, 255);\"\u003eVintage JBT Model 31-FX-50 Frequency Meter (48-52 Hz)\u003c\/div\u003e\u003cdiv class=\"Y3BBE\" data-sfc-cp=\"\" jsaction=\"rcuQ6b:\u0026amp;YT85be_f|npT2md\" jscontroller=\"zcfIf\" jsuid=\"YT85be_f\" data-hveid=\"CAEIAhAA\" data-complete=\"true\" data-processed=\"true\" style=\"font-family: \" google sans roboto arial sans-serif break-word rgb font-size:=\"\" line-height:=\"\" overflow-wrap:=\"\" margin-block:=\"\" color:=\"\" background-color:=\"\"\u003e\u003cbr\u003e\u003c\/div\u003e\u003cdiv class=\"Y3BBE\" data-sfc-cp=\"\" jsaction=\"rcuQ6b:\u0026amp;YT85be_f|npT2md\" jscontroller=\"zcfIf\" jsuid=\"YT85be_f\" data-hveid=\"CAEIAhAA\" data-complete=\"true\" data-processed=\"true\" style=\"font-family: \" google sans roboto arial sans-serif break-word rgb font-size:=\"\" line-height:=\"\" overflow-wrap:=\"\" margin-block:=\"\" color:=\"\" background-color:=\"\"\u003eThis listing is for a genuine vintage JBT (J-B-T Instruments, Inc.) analog frequency meter. This gauge is a \"vibrating reed\" type, known for its extreme reliability in industrial settings. It is designed to measure alternating current (AC) frequency for systems operating nominally at 50 Hz, specifically within the range of 48 to 52 Hertz. It is an ideal component for monitoring legacy power systems, industrial control panels, or for collectors of vintage electrical test equipment.\u003cspan class=\"vKEkVd\" data-animation-atomic=\"\" data-wiz-attrbind=\"class=YT85be_h\/TKHnVd\" data-sae=\"\" style=\"text-wrap-mode: nowrap; position: relative;\"\u003e\u003cbutton jsuid=\"YT85be_j\" tabindex=\"0\" data-amic=\"true\" data-icl-uuid=\"538368d9-5ea2-41ab-9ec5-6d6f1f06edd3\" aria-label=\"View related links\" class=\"rBl3me\" jsaction=\"click:\u0026amp;YT85be_h|S9kKve;mouseenter:\u0026amp;YT85be_h|sbHm2b;mouseleave:\u0026amp;YT85be_h|Tx5Rb\" data-wiz-attrbind=\"disabled=YT85be_h\/C5gNJc;aria-label=YT85be_h\/bOjMyf;class=YT85be_h\/UpSNec\" data-ved=\"2ahUKEwjZzO2jlLuSAxWMkokEHbOgEPwQye0OegYIAQgCEAE\" style=\"margin: 0px 6px 0px 0px; background-color: rgb(233, 235, 240); border-width: initial; border-style: none; border-color: initial; border-radius: 10px; height: 20px; padding: 0px; width: 20px; outline: 0px; cursor: pointer;\"\u003e\u003cspan class=\"wiMplc ofC0Ud\" style=\"color: rgb(86, 89, 94); display: inline-block; transform: rotate(135deg);\"\u003e\u003csvg style=\"margin-top: 3px;\" fill=\"currentColor\" width=\"12px\" height=\"12px\" focusable=\"false\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/button\u003e\u003c\/span\u003e\n\u003c\/div\u003e\u003cdiv class=\"Fsg96\" data-sfc-cp=\"\" jsaction=\"rcuQ6b:\u0026amp;YT85be_k|npT2md\" jscontroller=\"KHhJQ\" jsuid=\"YT85be_k\" data-complete=\"true\" data-processed=\"true\" style=\"color: rgb(10, 10, 10); font-family: \" google sans roboto arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003c\/div\u003e\u003cdiv class=\"AdPoic\" aria-level=\"3\" role=\"heading\" data-animation-nesting=\"\" data-sfc-cp=\"\" jscontroller=\"SF2W9b\" jsuid=\"YT85be_l\" data-complete=\"true\" data-processed=\"true\" data-sae=\"\" style=\"margin-block: 24px 12px; color: rgb(10, 10, 10); font-family: \" google sans roboto arial sans-serif rgb font-size:=\"\" line-height:=\"\" font-weight:=\"\" background-color:=\"\"\u003eItem Details \u0026amp; Specifications\u003cspan class=\"vKEkVd\" data-animation-atomic=\"\" data-wiz-attrbind=\"class=YT85be_m\/TKHnVd\" data-sae=\"\" style=\"text-wrap-mode: nowrap; position: relative;\"\u003e\u003cbutton jsuid=\"YT85be_o\" tabindex=\"0\" data-amic=\"true\" data-icl-uuid=\"62a17e73-d740-4c30-a641-fe522bb0e88b\" aria-label=\"View related links\" class=\"rBl3me\" jsaction=\"click:\u0026amp;YT85be_m|S9kKve;mouseenter:\u0026amp;YT85be_m|sbHm2b;mouseleave:\u0026amp;YT85be_m|Tx5Rb\" data-wiz-attrbind=\"disabled=YT85be_m\/C5gNJc;aria-label=YT85be_m\/bOjMyf;class=YT85be_m\/UpSNec\" data-ved=\"2ahUKEwjZzO2jlLuSAxWMkokEHbOgEPwQye0OegYIAQgDEAA\" style=\"margin: 0px 6px 0px 0px; background-color: rgb(233, 235, 240); border-width: initial; border-style: none; border-color: initial; border-radius: 10px; height: 20px; padding: 0px; width: 20px; outline: 0px; cursor: pointer;\"\u003e\u003cspan class=\"wiMplc ofC0Ud\" style=\"color: rgb(86, 89, 94); display: inline-block; transform: rotate(135deg);\"\u003e\u003csvg style=\"margin-top: 3px;\" fill=\"currentColor\" width=\"12px\" height=\"12px\" focusable=\"false\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/button\u003e\u003c\/span\u003e\n\u003c\/div\u003e\u003cdiv class=\"Fsg96\" data-sfc-cp=\"\" jsaction=\"rcuQ6b:\u0026amp;YT85be_p|npT2md\" jscontroller=\"KHhJQ\" jsuid=\"YT85be_p\" data-complete=\"true\" data-processed=\"true\" style=\"color: rgb(10, 10, 10); font-family: \" google sans roboto arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003c\/div\u003e\u003cdiv class=\"Fv6NCb\" jsuid=\"YT85be_q\" data-sfc-cp=\"\" jsaction=\"rcuQ6b:\u0026amp;YT85be_q|npT2md\" jscontroller=\"kbUand\" data-ved=\"2ahUKEwjZzO2jlLuSAxWMkokEHbOgEPwQ-q4QegYIAQgEEAA\" data-complete=\"true\" data-processed=\"true\" style=\"overflow-x: auto; width: 652px; margin-block: 16px 24px; box-sizing: border-box; scrollbar-width: none; color: rgb(10, 10, 10); font-family: \" google sans roboto arial sans-serif rgb font-size:=\"\" background-color:=\"\"\u003e\u003ctable class=\"NRefec\" data-animation-nesting=\"\" data-complete=\"true\" data-sae=\"\" style=\"border: none; border-collapse: collapse; table-layout: auto; width: 652px;\"\u003e\u003ctbody data-complete=\"true\"\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" jscontroller=\"OkanJc\" jsuid=\"YT85be_r\" data-complete=\"true\"\u003e\n\u003cth class=\"iry6k\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"uuu13\" jsuid=\"YT85be_s\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; font-size: 14px; line-height: 22px; padding: 8px 16px 8px 0px; text-align: left;\"\u003eFeature\u003cspan class=\"vKEkVd\" data-animation-atomic=\"\" data-wiz-attrbind=\"class=YT85be_t\/TKHnVd\" data-sae=\"\" style=\"text-wrap-mode: nowrap; position: relative;\"\u003e\u003cbutton jsuid=\"YT85be_v\" tabindex=\"0\" data-amic=\"true\" data-icl-uuid=\"a9880e07-86a7-405f-bdb9-8ab1f73b2938\" aria-label=\"View related links\" class=\"rBl3me\" jsaction=\"click:\u0026amp;YT85be_t|S9kKve;mouseenter:\u0026amp;YT85be_t|sbHm2b;mouseleave:\u0026amp;YT85be_t|Tx5Rb\" data-wiz-attrbind=\"disabled=YT85be_t\/C5gNJc;aria-label=YT85be_t\/bOjMyf;class=YT85be_t\/UpSNec\" data-ved=\"2ahUKEwjZzO2jlLuSAxWMkokEHbOgEPwQye0OegYIAQgEEAE\" style=\"margin: 0px 6px 0px 0px; background-color: rgb(233, 235, 240); border-width: initial; border-style: none; border-color: initial; border-radius: 10px; height: 20px; padding: 0px; width: 20px; outline: 0px; cursor: pointer;\"\u003e\u003cspan class=\"wiMplc ofC0Ud\" style=\"color: rgb(86, 89, 94); display: inline-block; transform: rotate(135deg);\"\u003e\u003csvg style=\"margin-top: 3px;\" fill=\"currentColor\" width=\"12px\" height=\"12px\" focusable=\"false\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" viewbox=\"0 0 24 24\"\u003e\u003cpath d=\"M3.9 12c0-1.71 1.39-3.1 3.1-3.1h4V7H7c-2.76 0-5 2.24-5 5s2.24 5 5 5h4v-1.9H7c-1.71 0-3.1-1.39-3.1-3.1zM8 13h8v-2H8v2zm9-6h-4v1.9h4c1.71 0 3.1 1.39 3.1 3.1s-1.39 3.1-3.1 3.1h-4V17h4c2.76 0 5-2.24 5-5s-2.24-5-5-5z\"\u003e\u003c\/path\u003e\u003c\/svg\u003e\u003c\/span\u003e\u003c\/button\u003e\u003c\/span\u003e\n\u003c\/th\u003e\n\u003cth class=\"iry6k\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"uuu13\" jsuid=\"YT85be_w\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; font-size: 14px; line-height: 22px; padding: 8px 0px; text-align: left;\"\u003eDetail\u003c\/th\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" jscontroller=\"OkanJc\" jsuid=\"YT85be_x\" data-complete=\"true\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_y\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 16px 12px 0px;\"\u003eManufacturer\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_10\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 0px;\"\u003eJ-B-T Instruments, Inc.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" jscontroller=\"OkanJc\" jsuid=\"YT85be_11\" data-complete=\"true\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_12\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 16px 12px 0px;\"\u003eModel Number\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_14\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 0px;\"\u003e31-FX-50\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" jscontroller=\"OkanJc\" jsuid=\"YT85be_15\" data-complete=\"true\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_16\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 16px 12px 0px;\"\u003eType\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_18\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 0px;\"\u003eVibrating Reed Frequency Meter\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" jscontroller=\"OkanJc\" jsuid=\"YT85be_19\" data-complete=\"true\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_1a\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 16px 12px 0px;\"\u003eMeasurement\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_1c\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 0px;\"\u003eFrequency (Hertz)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" jscontroller=\"OkanJc\" jsuid=\"YT85be_1d\" data-complete=\"true\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_1e\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 16px 12px 0px;\"\u003eMeasurement Range\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_1g\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 0px;\"\u003e48 - 52 Hz (48, 50, 52 Hz marked reeds)\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" jscontroller=\"OkanJc\" jsuid=\"YT85be_1h\" data-complete=\"true\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_1i\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 16px 12px 0px;\"\u003eOperating Voltage\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_1k\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 0px;\"\u003e100 - 130 V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" jscontroller=\"OkanJc\" jsuid=\"YT85be_1l\" data-complete=\"true\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_1m\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 16px 12px 0px;\"\u003eOrigin\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_1o\" data-complete=\"true\" style=\"border-bottom: 1px solid rgb(220, 223, 229); min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 0px;\"\u003eNew Haven, Conn., U.S.A.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr class=\"cZCYO\" data-sfc-cp=\"\" jscontroller=\"OkanJc\" jsuid=\"YT85be_1p\" data-complete=\"true\"\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_1q\" data-complete=\"true\" style=\"border-bottom: none; min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 16px 12px 0px;\"\u003eMounting Style\u003c\/td\u003e\n\u003ctd class=\"cOeeGf\" colspan=\"undefined\" data-sfc-cp=\"\" jscontroller=\"QYassd\" jsuid=\"YT85be_1s\" data-complete=\"true\" aria-owns=\"action-menu-toolbar\" style=\"border-bottom: none; min-width: 4em; vertical-align: top; color: rgb(10, 10, 10); font-size: 14px; line-height: 22px; padding: 12px 16px 12px 0px;\"\u003eRound Panel Mount\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\u003c\/table\u003e\u003c\/div\u003e\u003cp\u003eselling as pictured.\u003c\/p\u003e\u003cp\u003emore than welcome to pick up at shop in butler pa \u0026amp; save shipping.\u003c\/p\u003e\u003cp\u003e020226 jy\u003c\/p\u003e","brand":"cyclewarehouse.online","offers":[{"title":"Default Title","offer_id":46560296829090,"sku":"020226 Hertz Meter","price":79.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0335\/9824\/2861\/files\/img20260202104723378hdr.jpg?v=1770048357","url":"https:\/\/cyclewarehouse.online\/products\/vintage-jbt-model-31-fx-50-frequency-meter-48-52-hz","provider":"cyclewarehouse.online","version":"1.0","type":"link"}