


Ullaging slide-rule

Excise slide rule
1836-1900

Verie or Excise officer's slide rule

Head rod
1808-1815

Ullage Slide Rule (dated 1780)
1780

Nine inch Ullage and casting rule
1850-1860

Modified form of Revenue Verie slide rule
1860-1870

Ham's Ullage rule
1880-1885

Excise Officer's slide rule in boxwood
1801-1830

Excise officer's slide rule by W. Rix
1740-1746

Slide rule
1810-1820

12" Proof Slide Rule (c. 1870)
1845-1882

12" Ullage Slide Rule (c. 1870)
1845-1882

Excise slide rule of Verie type in boxwood (stock 91/2 in)

Proof Rule (c. 1840)
1840-1845

Ullage Slide Rule (c. 1820)
1820-1825

Slide rule, with two double-sided sliders, for Excise Officer

Reducing and comparative slide rule, for Excise Officer
1821-1846

Excise officer's slide rule in boxwood

Ham's proof rule
1855-1865
Excise Officer's slide rule
Excise officer's slide rule
1759-1769
Gauger's slide rule by Dring and Fage
1790-1800
Mechanical counter for fluid meters, 1881.
Gauger's slide rule
1835-1845