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