Patent number 1612344 (dec 1926), this 1927 instrument. And shows barometric pressure, temperature and humidity. Unusual display for the barometer which includes a rising/falling indicator. Rather than a hand on the dial – very nice touch. [...]
Posts tagged humidity
Antique 1902 Tycos Lloyd’s Hygrodeik Relative Humidity Scientific Instrument
We are pleased to offer this exceptionally well preserved. Lloyd’s hygrodeik by tycos, rochester. Made in the early 20th century, for andrew j. A hygrodeik measures relative humidity, with wet and dry thermometers, and an index arm [...]
Antique 1902 Tycos Lloyd’s Hygrodeik Relative Humidity Scientific Instrument
We are pleased to offer this exceptionally well preserved. Lloyd’s hygrodeik by tycos, rochester. Made in the early 20th century, for [...]