Clarke's Hydrometer (c. 1755)
1755
Salinometer in gilt brass having a rectangular stem inscribed with scale 0
late 19th century
Hydrometer by Robert Atkins
1803
Hydrometer for propane or butane
British Standard density hydrometer made to BS 718
Barkometer for testing tanning liquids. G.H. Zeale Ltd.
Bate's standard saccharometer with wire stem; with one poise and one weight
1823
Hydrometer by A. Reballio
1851-1900
Fletcher's thermohydrometer
Glass hydrometer with specific gravity seal for liquids from petroleum ether to oleum
Thermo-hydrometer, Plato, range 0 - 24 . G.H. Zeal Ltd.
Alcoholometer, Tralles' type
Set of 6 Twaddell hydrometers nos 4-6 made by William Twaddell
Glass hydrometer by T A Reynolds and Co., London
Hydrometer to test distrubution of particle sizes in soils. G.H. Zeal Ltd.
Sikes' hydrometer by Loftus
Saccharometer for hot wort
Specific gravity hydrometer
ASTM specific gravity hydrometer for testing light liquids
Battery hydrometer
Salinometer, nickel plated
1854-1877
Brass hydrometer set
1810-1830
Gill's patent saccharometer
Bate's Saccharometer (c. 1860)
1830
Hydrometer in case with weights
1820
"Bate's Patent Saccharometer" (c. 1830) signed BATE POULTRY LONDON
1830
Glass hydrometer by A J Reynolds, Barnsbury
Glass specific gravity hydrometer
circa 1910
Specific gravity hydrometer
Hydrometer jar of thick glass
1800-1830
Glass hydrometer
1900
Hydrometers with jar and thermometer
Saccharometer
Anti-freeze hydrometer set consisting of two hydrometer floats and glass jacket
1984
Glass hydrometer by T A Reynolds and Co., London
Lactometer.
Ivory Hydrometer (c. 1700-30)
1700-1730
Brass hydrometer of unusual design
Twaddell's No 1 hydrometer in glass
Saccharometer, metal, Brix range 0 - 20 G.H. Zeal Ltd.
Specific gravity hydrometer
Lactometer or Milk Tester (dated 1869) by MOTTASHEAD & CO
1869
A.P.I hydrometer for petroleum
Alcoholometer graduated in percentage alcohol by weight. G.H. Zeal Ltd.
Sikes' hydrometer as at present used by Customs
Sample cup or spirit safe hydrometer
Saccharometer, range 1.000 - 1.040 S.G. at 48F
Glucometer (c. 1850) signed J LONG LONDON. NO. 4434
1850
Lucamart battery hydrometer with float.
