| Year | 1911 |
| Date | 17-Aug |
| Volume | 25 |
| Issue | 538 |
| Page | 156 |
| Category | Aeronautical |
| Part | |
| Title | Apparatus Used for Testing Elastic (Machine for Testing the Thrust of Screw Propellers for Model Aeroplanes) |
| Author | C.T.Pollit |
| Notes | Lever arm & weights used for indicating torque of elastic |