Found at Zeepreventorium.org. No description given. Probably from the 1960’s. It may be a volume-displacement plethysmograph and was identified as being manufactured by Fenyves & Gut by Emanuele Isnardi.
Found at Zeepreventorium.org. No description given. Probably from the 1960’s. It may be a volume-displacement plethysmograph and was identified as being manufactured by Fenyves & Gut by Emanuele Isnardi.