Archives for October 29, 2020

Barometer Thommen Sa Waldenburg / W 7699

The barometer is designed to calibrate other instruments, has an accuracy of 0.1% and a repeatability of 0.03%. There are two bimetallic elements in the barometer to compensate for temperature changes in the range from -25 ° C to + 35 ° C. This is important because most barometers are designed to [...]

Antique Pocket Compensated Barometer Brass Casing Wonderful Old Piece

Hello and thank you for viewing my listing. I have very limited knowledge on these type of things so unsure if its working correctly or not. Please see photo of the exact item you will receive. It is heavy brass. The item “Antique Pocket Compensated Barometer Brass Casing Wonderful Old Piece” is in sale [...]

Vintage 1920s Julien P. Friez Hygrograph. Vintage Scientific Instrument

In excellent clean condition. From the home of a retired surveyor that collected scientific instruments. The item “Vintage 1920s Julien P. Friez Hygrograph. Vintage Scientific Instrument” is in sale since Tuesday, October 27, 2020. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The [...]