![Prototype electromagnetic microbalance for vacuum studies](https://coimages.sciencemuseumgroup.org.uk/319/920/large_smg00026021.jpg)
Prototype electromagnetic microbalance for vacuum studies
Cahn RH type electrobalance; prototype electromagnetic microbalance for use in vacuum studies, but supplied with a broken ribbon suspension.
Cahn RH type electrobalance; prototype electromagnetic microbalance for use in vacuum studies; automatic recording; instrument complete with control unit but supplied with a broken ribbon suspension; commercially available April 1966.
Cahn RH type electrobalance; prototype electromagnetic microbalance for use in vacuum studies, but supplied with a broken ribbon suspension.
Control unit for automatic recording.