A plethysmograph was an instrument for measuring variations in the size of an organ. On Jedha, G2-1B7 used one such device to track variations on Saw Gerrera's lung capacity.
| Identifier (URI) | Rank |
|---|---|
| dbkwik:resource/FsT_4Ax1RTL-37JlHT7Sbg== | 5.88129e-14 |
| dbr:Plethysmograph | 5.88129e-14 |