![](https://coimages.sciencemuseumgroup.org.uk/129/92/large_thumbnail_1946_0180.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/129/92/large_thumbnail_1946_0180.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/325/694/large_thumbnail_smg00048655.jpg)
Ullaging slide-rule
![](https://coimages.sciencemuseumgroup.org.uk/325/738/large_thumbnail_smg00048703.jpg)
Excise slide rule
1836-1900
![](https://coimages.sciencemuseumgroup.org.uk/313/617/large_thumbnail_smg00030133.jpg)
Head rod
1808-1815
![](https://coimages.sciencemuseumgroup.org.uk/325/734/large_thumbnail_smg00048699.jpg)
Ullage Slide Rule (dated 1780)
1780
![](https://coimages.sciencemuseumgroup.org.uk/325/709/large_thumbnail_smg00048670.jpg)
Modified form of Revenue Verie slide rule
1860-1870
![](https://coimages.sciencemuseumgroup.org.uk/325/708/large_thumbnail_smg00048669.jpg)
Nine inch Ullage and casting rule
1850-1860
![](https://coimages.sciencemuseumgroup.org.uk/325/756/large_thumbnail_smg00048721.jpg)
Verie or Excise officer's slide rule
![](https://coimages.sciencemuseumgroup.org.uk/325/722/large_thumbnail_smg00048685.jpg)
Excise officer's slide rule in boxwood
![](https://coimages.sciencemuseumgroup.org.uk/313/615/large_thumbnail_smg00030130.jpg)
Ham's Ullage rule
1880-1885
![](https://coimages.sciencemuseumgroup.org.uk/313/614/large_thumbnail_smg00030129.jpg)
Ham's proof rule
1855-1865
![](https://coimages.sciencemuseumgroup.org.uk/325/725/large_thumbnail_smg00048688.jpg)
Excise Officer's slide rule in boxwood
1801-1830
![](https://coimages.sciencemuseumgroup.org.uk/325/712/large_thumbnail_smg00048673.jpg)
Excise officer's slide rule by W. Rix
1740-1746
![](https://coimages.sciencemuseumgroup.org.uk/325/702/large_thumbnail_smg00048663.jpg)
Slide rule
1810-1820
![](https://coimages.sciencemuseumgroup.org.uk/325/701/large_thumbnail_smg00048662.jpg)
12" Proof Slide Rule (c. 1870)
1845-1882
![](https://coimages.sciencemuseumgroup.org.uk/325/713/large_thumbnail_smg00048674.jpg)
12" Ullage Slide Rule (c. 1870)
1845-1882
![](https://coimages.sciencemuseumgroup.org.uk/325/710/large_thumbnail_smg00048671.jpg)
Excise slide rule of Verie type in boxwood (stock 91/2 in)
![](https://coimages.sciencemuseumgroup.org.uk/325/730/large_thumbnail_smg00048695.jpg)
Proof Rule (c. 1840)
1840-1845
![](https://coimages.sciencemuseumgroup.org.uk/325/723/large_thumbnail_smg00048686.jpg)
Ullage Slide Rule (c. 1820)
1820-1825
![](https://coimages.sciencemuseumgroup.org.uk/325/711/large_thumbnail_smg00048672.jpg)
Slide rule, with two double-sided sliders, for Excise Officer
![](https://coimages.sciencemuseumgroup.org.uk/325/705/large_thumbnail_smg00048666.jpg)
Reducing and comparative slide rule, for Excise Officer
1821-1846
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