Industrial equipment - Germany - Gossen ohm meter

This device is a vintage Gossen Panohm analog resistance meter (ohmmeter). [1] (https://www.ebay.co.uk/itm/335208642303), [2] (https://www.marktplaats.nl/v/antiek-en-kunst/antiek-gereedschap-en-instrumenten/m2439381603-vintage-panohm-weerstand-en-condensaror-meter-met-leren-etui) This specific specimen is marked with "PTT 3515", which means that it is a custom-made or certified measuring instrument that was previously used by the Dutch state company PTT (Post, Telegraph and Telephone) for testing and maintaining telephone lines and network infrastructures. [1] (https://www.marktplaats.nl/q/ptt+meetapparatuur/) Features of the device: Function: It is a pure resistance meter (ohmmeter), recognizable by the large Ω (Ohm) symbol at the top of the scale. Manufacturer: Gossen (Germany), known for its high-quality analog measuring instruments. Measurement range: On the right there are sockets for different multiply factors (Ω × 1, × 10, × 100, × 1000) to select the correct range. Accessories: The meter is in its original brown leather protective case and is equipped with the accompanying test leads and probes. (https://www.alte-messgeraete.de/elektrotechnik/gossen-erlangen-bayern/623-multimeter-panohm/), [(https://www.marktplaats.nl/v/antiek-en-kunst/antiek-gereedschap-en-instrumenten/m2439381603-vintage-panohm-weerstand-en-condensaror-meter-met-leren-etui) Long has it been in our family, from my grandfather’s side, my grandfather who worked in the telecom department of the PTT after the war had to repair parts of telephone lines and telephone exchanges, so workers needed precise measuring equipment for that. This ohmmeter was used in the field on all cables and clamps and such, and in the original leather case. This is truly for the serious collector, so grab your chance. For a meter almost 75 years old.