Ullage and casting slide rule, mid 19th century
1831-1870
Sikes' Revenue Hydrometer, 1816-1873.
1816-1873
Portable Sikes' hydrometer by Dring and Fage
1873
Three gilt Tate saccharometers by Dring and Fage
1961
Folding Timber Slide Rule (c. 1860-1870)
1860-1870
Twaddell's No. 1 hydrometer, scale 0-24.
Cartier hydrometer, scale 10-45.
Six's thermometer, 1876.
1876
Sikes' Hydrometer, English, 1903-1938
1903-1938
Four foot gauging rule
1804-1844
Improved saccharometer
1825-1835
Hydrometer, by Dring and Fage
1801-1900
Oleometer in box
Improved hydrometer with four weights
1815-1825
Clarke hydrometer in case with collars and weights
1840-1920
Set of Sikes' Standard Hydrometers, 1940-1950
1940-1950
Coulson's slide rule
1876
Clarke's improved hydrometer
1792
Sikes' Hydrometer (c. 1860)
1860
Clarke's Hydrometer (dated 1813)
1813
Brass latex hydrometer by Dring and Fage
circa 1950
Verie or Excise officer's slide rule
Circular slide rule in brass
1878-1882
Improved Sikes' Hydrometer by Dring and Fage
1830
Clarke's Alcohol Hydrometer, 1767-1800
1804-1844
Saccharometer hydrometer
Set of 5 brass Tralles' hydrometers with a Gay-Lussac hydrometer
1900-1950
Open range brass Sikes' hydrometer by Dring and Fage
1900-1950
Dring and Fage saccharometer in box
Timetable or rent rule
1840-1850
Boxwood Slide Rule; made by Dring and Fage
Burt's Slide Rule for reducing superficial measurements to inches
1887 patent
Improved brewing hydrometer
1815-1825
Brass Buss saccharometer
1851-1900
Rope gauge with brass calliper slide
1855-1865
Three silver (probably plated) Tate saccharometers by Dring and fage
1900-1950
Timetable or rent rule, 1850-1860.
1850-1860
Gilt Sikes hydrometer by Dring and fage
1867
Twaddell's No. 5 hydrometer, scale 102-138.
Tree height measurer, British, 1900-1905
1900-1905
Nickel-silver salinometer
Oiliometer, 1870
1870
Dring and Fage Slide Rule, boxwood and ivory
1820-1860
Twaddell's No. 4 hydrometer, scale 74-102.
Ivory slide rule with two slides
Barktrometer for measuring the density of tanning liquor
1876
Clarke's export hydrometer in box.
Ewart's cattle gauge with ivory slide and cursor by Dring and Fage
1903-1910
Gilt hydrometer 'for strong spirits only' by Dring and Fage
1952
Gilt Keene's wine hydrometer by Dring and Fage
1830-1880