{"product_id":"brass-dennison-millimeter-watchmakers-mainspring-gauge","title":"Brass Dennison \u0026 Millimeter Watchmakers Mainspring Gauge","description":"\u003cp\u003eBrass Dennison and Metric Mainspring Gauge, well used but in good condition. Marked \"Made in USA for\" and then nobody is specified underneath.  Once side is Metric and the other is Dennision. Previous owners name are engraved on front of the tool. Tool is pretty good quality and still in completely functional condition given it's probably a good 100 years old. Images do a marginally adequate job of representing the item. \u003cbr\u003e\u003c\/p\u003e","brand":"Unbranded","offers":[{"title":"Default Title","offer_id":48557205422388,"sku":"TMT-BRDENMM43-04","price":20.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0849\/3341\/1124\/files\/2026-08-1216.20.02.jpg?v=1786577033","url":"https:\/\/www.vintagetimeparts.com\/products\/brass-dennison-millimeter-watchmakers-mainspring-gauge","provider":"Vintage Time Parts","version":"1.0","type":"link"}