{"product_id":"nist-2025-calibrated-ludlum-model-3-44-7-probe-guaranteed-for-1-year","title":"NIST 2025 Calibrated! Ludlum Model 3 + 44-7 Probe Guaranteed for 1 year!","description":"\u003cdiv class=\"item-specifics\"\u003e\u003cdiv class=\"specs-grid\"\u003e\n\u003cdiv class=\"spec-pair\"\u003e\n\u003cdiv class=\"spec-name\"\u003eBrand\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eLudlum\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-pair\"\u003e\n\u003cdiv class=\"spec-name\"\u003eUnit Type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUnit\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-pair\"\u003e\n\u003cdiv class=\"spec-name\"\u003eCustom Bundle\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNo\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-pair\"\u003e\n\u003cdiv class=\"spec-name\"\u003eModel\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eMODEL 3\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-pair\"\u003e\n\u003cdiv class=\"spec-name\"\u003eMPN\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eModel 3\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-pair\"\u003e\n\u003cdiv class=\"spec-name\"\u003eUnit Quantity\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003e1\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-pair\"\u003e\n\u003cdiv class=\"spec-name\"\u003eModified Item\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eNo\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-pair\"\u003e\n\u003cdiv class=\"spec-name\"\u003eCountry of Origin\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eUnited States\u003c\/div\u003e\n\u003c\/div\u003e\n\u003cdiv class=\"spec-pair\"\u003e\n\u003cdiv class=\"spec-name\"\u003eRadiation Detector Type\u003c\/div\u003e\n\u003cdiv class=\"spec-value\"\u003eGeiger Counter\u003c\/div\u003e\n\u003c\/div\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cdiv class=\"item-description\"\u003e\u003cdiv class=\"description-text\"\u003e\n\u003cp data-start=\"469\" data-end=\"599\"\u003e\u003c\/p\u003e\n\u003cp data-start=\"310\" data-end=\"460\"\u003e\u003cstrong data-start=\"310\" data-end=\"460\"\u003eMultiple calibrated meter and probe combinations are available for purchase or rental. Contact us if you need a specific configuration or pairing.\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp data-start=\"462\" data-end=\"892\"\u003eThis listing is for a Ludlum Model 3 portable survey meter paired with a Ludlum 44-7 GM pancake-style detector. The unit has been fully serviced and calibrated using a Ludlum Model 500 digital pulse generator with a current NIST traceable factory calibration. The calibration performed in December 2025 is documented in the included paperwork. Needle alignment, response, and stability were verified following Ludlum procedures.\u003c\/p\u003e\n\u003cp data-start=\"894\" data-end=\"985\"\u003e\u003cstrong data-start=\"894\" data-end=\"924\"\u003eCertified 2025 Calibration\u003c\/strong\u003e\u003cbr data-start=\"924\" data-end=\"927\"\u003e\nLudlum Model 3 Survey Meter with Ludlum 44-7 GM Detector\u003c\/p\u003e\n\u003cp data-start=\"987\" data-end=\"1165\"\u003eThis instrument is guaranteed to arrive fully functional, tested, and ready to use. Batteries are included.\u003cbr data-start=\"1094\" data-end=\"1097\"\u003e\nThe exact unit shown in the photographs is the one you will receive.\u003c\/p\u003e\n\u003cp data-start=\"1167\" data-end=\"1387\"\u003eThe meter is used and may show normal cosmetic wear, but it has been carefully inspected, serviced, and adjusted for proper operation. All calibration paperwork and supporting documentation are included exactly as shown.\u003c\/p\u003e\n\u003cp data-start=\"1389\" data-end=\"1568\"\u003eThe 44-7 detector provides excellent sensitivity for general Alpha, Beta, and Gamma contamination surveys.\u003cbr data-start=\"1495\" data-end=\"1498\"\u003e\nPortable radiation survey meter often referred to as a Geiger Counter.\u003c\/p\u003e\n\u003cp data-start=\"1570\" data-end=\"1707\"\u003eThe sample photographs show the instrument responding to a check source to demonstrate proper function. The check source is not included.\u003c\/p\u003e\n\u003cp data-start=\"1709\" data-end=\"1812\"\u003eThese are high-quality professional units that have been well maintained and tested to a high standard.\u003c\/p\u003e\n\u003cp data-start=\"1814\" data-end=\"1930\"\u003ePlease review all photos for condition and details. This one does have a small crack on the glass meter cover. See pictures!\u003c\/p\u003e\n\u003cp data-start=\"1814\" data-end=\"1930\"\u003eYou may search the model numbers online for full specifications.\u003c\/p\u003e\n\u003cp data-start=\"1932\" data-end=\"2002\"\u003eIf you have any questions, feel free to contact me. I respond quickly.\u003c\/p\u003e\n\u003cp data-start=\"2004\" data-end=\"2043\"\u003eItem ships the same day payment clears.\u003c\/p\u003e\n\u003cp data-start=\"2045\" data-end=\"2161\"\u003eIf purchasing from outside the 48 states, please contact me before buying so that shipping arrangements can be made.\u003c\/p\u003e\n\u003cbr\u003e\n\u003c\/div\u003e\u003c\/div\u003e\u003cstyle\u003e\n  .item-specifics, .item-description {font-family: Arial, sans-serif; font-size: 14px; margin-top: 16px;}\n  .title {font-size: 16px; font-weight: bold; margin: 0 0 8px 0;}\n  .specs-grid {display: grid; grid-template-columns: repeat(2, 1fr); gap: 12px 24px;}\n  .spec-pair {display: grid; grid-template-columns: 120px 1fr; gap: 8px;}\n  .spec-name {font-weight: bold; color: #111;}\n  .spec-value {color: #333;}\n  .description-text {margin-top: 8px; line-height: 1.4; color: #333;}\n\u003c\/style\u003e\n","brand":"Tech By MBF","offers":[{"title":"Default Title","offer_id":50664258109687,"sku":"v1|277563683517|0","price":650.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0925\/3752\/0375\/files\/s-l1600_16e1ca8a-c9b0-4525-bc39-794bf5ce9f67.jpg?v=1781046401","url":"https:\/\/techbymbf.com\/products\/nist-2025-calibrated-ludlum-model-3-44-7-probe-guaranteed-for-1-year","provider":"Tech By MBF","version":"1.0","type":"link"}