Hartmann & Braun Universal-Summer – Vintage Signal Source for Kapavi / Inkavi
€45,00 EUR
Skip to product information
A characterful piece of vintage German laboratory engineering: the Hartmann & Braun (H&B) Universal-Summer, featuring a compact geometric design and a glossy, deep black housing.
According 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 & Braun Kapavi and Inkavi measuring instruments. These technical details have not been confirmed by functional testing.
The housing, described in the supplied information as Bakelite, features the distinctive embossed H&B 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.
An appealing small collectible and display piece for enthusiasts of historical electronic testing equipment and industrial design.
• Brand and model: Hartmann & Braun Universal-Summer (Kapavi / Inkavi)
• Dimensions: approximately 14 × 7.5 × 4 cm
• Weight: approximately 300 g
• Condition: vintage, with visible scratches and signs of use; please see the photos
• Function: untested, offered as a historical collectible and display item, with no guarantee of operation or measurement accuracy
Only one example of this product is available. Tracked shipping is charged separately.
Hartmann & Braun Universal-Summer – Vintage Signal Source for Kapavi / Inkavi
€45,00 EUR