![](https://coimages.sciencemuseumgroup.org.uk/321/740/large_thumbnail_smg00071413.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/321/740/large_thumbnail_smg00071413.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/321/576/large_thumbnail_smg00026698.jpg)
Glass IPT customs and excise hydrometer by S & A Calderara
![](https://coimages.sciencemuseumgroup.org.uk/316/803/large_thumbnail_smg00027803.jpg)
Glass customs and excise hydrometer by S & A Calderara
![](https://coimages.sciencemuseumgroup.org.uk/316/799/large_thumbnail_smg00027799.jpg)
Glass customs and excise hydrometer by J Hicks
1880-1940
![](https://coimages.sciencemuseumgroup.org.uk/321/873/large_thumbnail_smg00072651.jpg)
Gilt revenue hydrometer by R.B.Bate London
1850-1880
![](https://coimages.sciencemuseumgroup.org.uk/321/879/large_thumbnail_smg00072660.jpg)
Glass excise hydrometer by Oertling
1914
![](https://coimages.sciencemuseumgroup.org.uk/321/878/large_thumbnail_smg00072659.jpg)
Glass excise hydrometer by Oertling
1908
![](https://coimages.sciencemuseumgroup.org.uk/318/249/large_thumbnail_smg00027815.jpg)
Gilt Keene's wine hydrometer by Dring and Fage
1830-1880
![](https://coimages.sciencemuseumgroup.org.uk/316/802/large_thumbnail_smg00027802.jpg)
Glass customs and excise hydrometer by Hicks
1880-1940
![](https://coimages.sciencemuseumgroup.org.uk/321/864/large_thumbnail_smg00072632.jpg)
Gilt revenue hydrometer by Dring and Fage
1850-1880
![](https://coimages.sciencemuseumgroup.org.uk/321/872/large_thumbnail_smg00072648.jpg)
Gilt revenue hydrometer by Drign and Fage
1850-1900
![](https://coimages.sciencemuseumgroup.org.uk/321/738/large_thumbnail_smg00071411.jpg)
Glass customs and excise hydrometer by Dring and Fage
1900-1960
![](https://coimages.sciencemuseumgroup.org.uk/449/672/large_thumbnail_smg00072683.jpg)
Five glass customs and excise glass hydrometers by Hicks
1900-1940
![](https://coimages.sciencemuseumgroup.org.uk/321/876/large_thumbnail_smg00072657.jpg)
Gilt revenue hydrometer by J J Hicks
1909
![](https://coimages.sciencemuseumgroup.org.uk/321/882/large_thumbnail_smg00072663.jpg)
Two gilt excise hydrometers by Dring and Fage in mahogany box
1850-1900
![](https://coimages.sciencemuseumgroup.org.uk/318/255/large_thumbnail_smg00027821.jpg)
Chromium-plated customs and excise hydrometer by Dring and Fage
1930-1970
![](https://coimages.sciencemuseumgroup.org.uk/316/798/large_thumbnail_smg00027798.jpg)
Glass customs and excise hydrometer by S & A Calderara
Glass customs and excise hydrometer by Hicks
1880-1940
Glass excise hydrometer by Oertling
1880-1950
Gilt excise hydrometers
1880-1950
Glass customs and excise hydrometer by Short & Mason
1870-1940
Glass customs and excise hydrometer by J Hicks
1880-1930
Glass customs and excise hydrometer by Hicks
1870-1940