![](https://coimages.sciencemuseumgroup.org.uk/313/443/large_thumbnail_smg00026442.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/313/443/large_thumbnail_smg00026442.jpg)
![](https://coimages.sciencemuseumgroup.org.uk/460/221/large_thumbnail_smg00047237.jpg)
Diamond balance
1877
![](https://coimages.sciencemuseumgroup.org.uk/333/934/large_thumbnail_smg00047249.jpg)
Persian equal-arm balance, 1800-1810
1800-1810
![](https://coimages.sciencemuseumgroup.org.uk/721/136/large_thumbnail_1949_0229__0001_.jpg)
Case of Dutch Jeweller's Scales and Carat weights
1676
![](https://coimages.sciencemuseumgroup.org.uk/330/960/large_thumbnail_smg00047245.jpg)
Diamond balance, with weights and accessories
1800-1810
![](https://coimages.sciencemuseumgroup.org.uk/333/935/large_thumbnail_smg00047252.jpg)
Large diamond scales by Charles de Grave
1788-1799
![](https://coimages.sciencemuseumgroup.org.uk/345/643/large_thumbnail_smg00051700.jpg)
Cased set of jeweller's scales, signed "John Snart"
1700-1710
![](https://coimages.sciencemuseumgroup.org.uk/460/214/large_thumbnail_smg00047228.jpg)
Case of W. and T. Avery's Diamond scales and Weights
1817-1877
![](https://coimages.sciencemuseumgroup.org.uk/330/965/large_thumbnail_smg00047251.jpg)
Scales for weighing precious stones
1620-1640
![](https://coimages.sciencemuseumgroup.org.uk/345/656/large_thumbnail_smg00051721.jpg)
Small diamond scales with weights and forceps
1800-1810