{"product_id":"vintage-schuif-zakmicroscoop-met-scharnierend-kijkplaatje","title":"Vintage pocket microscope with rotating end and hinged viewing plate\n","description":"Slender vintage optical instrument described by the seller as a precision pocket microscope. Its dark cylindrical body has a rotating end that extends the instrument according to the seller, screw details and a small hinged metal plate with a circular opening. A characterful collector’s piece for enthusiasts of historical optics and mechanical instruments.\n\nDESIGN AND DETAILS\n\n• According to the seller, turning the end makes the instrument longer. It is not offered as a sliding model.\n• The previously suggested model name, Vario-Focus Pocket Field Microscope, has not been independently verified.\n• Dark brown to black finish with visible signs of use.\n• A row of screw details along the body and fastening screws near the end fitting.\n• Hinged metal viewing plate with a circular opening at the optical end.\n• Dimensions supplied by the seller: approximately 13 × 1.5 × 1.5 cm.\n• Weight supplied by the seller: 33 grams.\n• Brand, manufacturer and magnification have not been established.\n\nDATING AND POSSIBLE APPLICATION\n\nEstimated date according to the seller: circa 1920–1940, the interwar period. The seller describes the body as brass with a dark patinated or chemically darkened finish. The date, material and finish have not been independently verified.\n\nThe seller suggests a possible military or industrial inspection application and interprets the end fitting as a sighting aid or part of a prism arrangement. An internal prism, an exact 90-degree viewing angle, factory calibration and use for sighting equipment, cartography or barrel inspection have not been established. The instrument is therefore not offered as a proven military instrument or a guaranteed prism model.\n\nCONDITION AND OPERATION\n\nTested by the seller, who reports a clear lens. Operation has not been independently verified. The photographs show wear, scratches and localized discoloration on the body and metal parts. Two close-up photographs are out of focus and do not allow a reliable assessment of lens quality. Please examine all six photographs for the visible condition of this example.\n\nTracked shipping is charged separately.\n","brand":"continentalvintage.com","offers":[{"title":"Default Title","offer_id":59048579399944,"sku":null,"price":250.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1056\/0336\/7176\/files\/9788_ff396c0f-da11-42a2-8f66-509d7adc701c.jpg?v=1791540107","url":"https:\/\/continentalvintage.com\/products\/vintage-schuif-zakmicroscoop-met-scharnierend-kijkplaatje","provider":"continentalvintage.com","version":"1.0","type":"link"}