Clarke's Export Hydrometer (dated 1815) by DRING & FAGE
1815
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
Cartier hydrometer, scale 10-45.
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.
Six's thermometer, 1876.
1876
Hydrometer, by Dring and Fage
1801-1900
Sikes' Hydrometer, English, 1903-1938
1903-1938
Circular slide rule in brass
1878-1882
Salinometer (c. 1860) by DRING & FAGE LONDON
1860
Improved hydrometer with four weights
1815-1825
Four foot gauging rule
1804-1844
Clarke's Alcohol Hydrometer, 1767-1800
1804-1844
Oleometer in box
Improved saccharometer
1825-1835
Dring & Fage patent maximum and minimum thermometer, 1865-1875
1865-1875
Clarke hydrometer in case with collars and weights
1840-1920
Coulson's slide rule
1876
Set of Sikes' Standard Hydrometers, 1940-1950
1940-1950
Sikes' Hydrometer (c. 1860)
1860
Boxwood Slide Rule; made by Dring and Fage
Improved Sikes' Hydrometer by Dring and Fage
1830
Clarke's improved hydrometer
1792
Verie or Excise officer's slide rule
Brass Buss saccharometer
1851-1900
Saccharometer hydrometer
Clarke's Hydrometer (dated 1813)
1813
Ivory slide rule with two slides
Wollaston's chemical slide rule, c 1820.
1820
Brass latex hydrometer by Dring and Fage
circa 1950
Open range brass Sikes' hydrometer by Dring and Fage
1900-1950
Set of 5 brass Tralles' hydrometers with a Gay-Lussac hydrometer
1900-1950
Timetable or rent rule
1840-1850
Burt's Slide Rule for reducing superficial measurements to inches
1887 patent
Improved brewing hydrometer
1815-1825
Dring and Fage saccharometer in box
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
Ewart's cattle gauge with ivory slide and cursor by Dring and Fage
1903-1910
Tree height measurer, British, 1900-1905
1900-1905
Dring and Fage Slide Rule, boxwood and ivory
1820-1860
Gilt Keene's wine hydrometer by Dring and Fage
1830-1880
Gilt Sikes hydrometer by Dring and fage
1867
Clarke's export hydrometer in box.
Twaddell's No. 6 hydrometer, scale 138-170.
