Belfort Marine Self Recording Atmospheric Weather Barograph Instrument MARYLAND
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Antique Friez Sling Psychromoter Humidity Gage Wand Baltimore Maryland 1904
Antique Sling Psychrometer made by Friez company in Baltimore Maryland. A device to measure humidity with two thermometers one with a sock that is wet and one without. The device is swung around and the difference between the two thermometers tells the level of humidity. Believed to be made prior to 1904 when [...]
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Barometer, MFG Julien P. Friez, Baltimore, Maryland, Model 448-A
Barometer, MFG Julien P. Friez, Baltimore, Maryland, Model 448-A. The item “Barometer, MFG Julien P. Friez, Baltimore, Maryland, Model 448-A” is in sale since Wednesday, April 7, 2021. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “robpld1″ and is located in Chesapeake, Virginia. This item [...]
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Barometer, MFG Julien P. Friez, Baltimore, Maryland, Model 448-A
Barometer, MFG Julien P. Friez, Baltimore, Maryland, Model 448-A. The item “Barometer, MFG Julien P. Friez, Baltimore, Maryland, Model 448-A” is in sale since Sunday, March 28, 2021. This item is in the category “Antiques\Science & Medicine (Pre-1930)\Scientific Instruments\Barometers”. The seller is “robpld1″ and is located in Chesapeake, Virginia. This item can [...]
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