Standard of work to a high standard throughout, fit and finish good - it runs very well on air down to low speed.
| length/inches | 7 1/2 |
| width/inches | 6 |
| height/inches | 4 1/2 |
| weight/kg | 1 |
| bore x stroke/inches | 3/4 x 3/4 |
| wheel material | cast iron |
| cylinder material | cast iron |
| valve type | slide |