![](https://coimages.sciencemuseumgroup.org.uk/4/916/large_thumbnail_1995_0754.jpg)
Probably a battery powered amplifier
![SMG00296308](https://coimages.sciencemuseumgroup.org.uk/490/109/medium_smg00296308.jpg)
Probably a battery powered amplifier, marked 'Respiration or Myograph', with electrodes. Maker unknown, but very similar to 1996-277/142.
Probably a battery powered amplifier, marked 'Respiration or Myograph', with electrodes. Maker unknown, but very similar to 1996-277/142.