{"product_id":"antique-millet-signal-co-detectorphone-engine-stethoscope-in-wood-box-1","title":"Antique Millet Signal Co Detectorphone Engine Stethoscope in Wood Box⁠","description":"Item Description:\u003cbr\u003e\u003cbr\u003eFor sale is an exceptional and scarce Antique Millet Signal Co. Detectorphone, housed in its original wooden transit\/storage box. Manufactured by the Millet Signal Co. located at 120 Boylston Street, Boston, this early acoustic diagnostic instrument (essentially a specialized mechanical stethoscope and vibration detector) was used by mechanics and engineers in the early 20th century to locate internal noises, worn bearings, and mechanical defects in machinery, engines, and water pipes.\u003cbr\u003e\u003cbr\u003eFeatures \u0026amp; Details:\u003cbr\u003e\u003cbr\u003e Maker: Millet Signal Co., Boston, MA\u003cbr\u003e\u003cbr\u003e Included Components: Original wooden case with hinged lid and metal carry handle, interior instruction\/diagram broadside label, single earpiece with headband strap, main amplifier cylinder, extension rods, and sounding probe tip.\u003cbr\u003e\u003cbr\u003e Box Dimensions: Compact wooden transit case designed for field use.\u003cbr\u003e\u003cbr\u003e Historical Appeal: A fantastic display piece for collectors of early medical equipment, scientific instruments, automobilia, or vintage industrial oddities.\u003cbr\u003e\u003cbr\u003eCondition:\u003cbr\u003e\u003cbr\u003eIn vintage antique condition. The wooden box shows expected surface scuffs, scratches, and age patina consistent with early industrial use. The interior paper label remains mostly intact with some edge wear and creasing. The metal components show standard age-related patina. Please review all high-resolution photos for exact details on condition and included parts.","brand":"Vintage Paper Vault","offers":[{"title":"Default Title","offer_id":67642075054240,"sku":"100326-SS2","price":249.8,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1056\/6284\/0992\/files\/34a41aee-b14a-497c-aed4-7fd8ff15d769_7372cd03-2449-4fb9-85b2-bde6ab1e5752.jpg?v=1791076277","url":"https:\/\/vintagepapervault.com\/products\/antique-millet-signal-co-detectorphone-engine-stethoscope-in-wood-box-1","provider":"Vintage Paper Vault","version":"1.0","type":"link"}