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Hydrometer
Brass specific gravity hydrometer for use with mineral and other solids, in original wood, green velvet lined case.
Collection Area
Industry
Item Number
88.176I/1
Historical Associations
Associated Person/Body: Watkinson & Sons Ltd.
Association Type: coal company
Date: 1890
Association Type: colliery
Creation/Production
John Davis & Son Derby Ltd.
Acquisition
Donation, 30/12/1988
Measurements
Length
(mm): 320
Width
(mm): 50
case
(mm): 398
case
(mm): 80
case
(mm): 63
Height
(mm): 50
Weight
(g): 200
Weight
(g): 500
Material
brass
wood
velvet
Location
Big Pit National Coal Museum : Pit Head Baths Gallery (DC 1.02 middle shelf)
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