{"product_id":"hartmann-braun-universal-summer-vintage-signaalbron-voor-kapavi-inkavi","title":"Hartmann \u0026 Braun Universal-Summer – Vintage Signal Source for Kapavi \/ Inkavi\n","description":"A characterful piece of vintage German laboratory engineering: the Hartmann \u0026 Braun (H\u0026B) Universal-Summer, featuring a compact geometric design and a glossy, deep black housing.\n\nAccording to the supplied information, this device was produced in Frankfurt am Main and served as an external audio-frequency low-current source of approximately 800 Hz for classical bridge measurements, used with Hartmann \u0026 Braun Kapavi and Inkavi measuring instruments. These technical details have not been confirmed by functional testing.\n\nThe housing, described in the supplied information as Bakelite, features the distinctive embossed H\u0026B eagle logo. The device has a fluted adjustment knob, side connection prongs, and a compartment for a 4.5 V battery. A handwritten “4.5 V” marking appears on the underside. The adjustment knob and brass connection prongs are described in the supplied information as original.\n\nAn appealing small collectible and display piece for enthusiasts of historical electronic testing equipment and industrial design.\n\n• Brand and model: Hartmann \u0026 Braun Universal-Summer (Kapavi \/ Inkavi)\n• Dimensions: approximately 14 × 7.5 × 4 cm\n• Weight: approximately 300 g\n• Condition: vintage, with visible scratches and signs of use; please see the photos\n• Function: untested, offered as a historical collectible and display item, with no guarantee of operation or measurement accuracy\n\nOnly one example of this product is available. Tracked shipping is charged separately.\n","brand":"Hartmann \u0026 Braun","offers":[{"title":"Default Title","offer_id":59292626845960,"sku":null,"price":45.0,"currency_code":"EUR","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/1056\/0336\/7176\/files\/12158.jpg?v=1793347008","url":"https:\/\/continentalvintage.com\/products\/hartmann-braun-universal-summer-vintage-signaalbron-voor-kapavi-inkavi","provider":"continentalvintage.com","version":"1.0","type":"link"}