The image shows a vintage Pouleng Frères pH meter, housed in a wooden case. Pouleng Frères was a company based in Paris that manufactured scientific instruments. The device appears to be an early model, likely dating back to the early 20th century, given its design and the company's history.
Key features of the pH meter include:
Wooden Case:
The meter is contained within a wooden box, which would have provided protection during transport and storage. The inside of the lid has "pH Meter" handwritten on it.
Analog Display:
The meter features a circular analog display with a needle indicator for reading pH levels.
Brass Components:
There are several brass elements, including knobs and connectors, which are typical of instruments from this era.
pH meters are used to measure the acidity or alkalinity of a substance, with the pH scale ranging from 0 to 14, where 7 is neutral, values below 7 are acidic, and values above 7 are alkaline.
The pictures are your best guide to condition.
48x24x14cmx6kg
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