| Year | 1934 |
| Date | 05-Apr |
| Volume | 70 |
| Issue | 1,717 |
| Page | 318 |
| Category | Internal Combustion |
| Part | |
| Title | Magneto Replacement Units for Coil Ignition Systems |
| Author | |
| Notes | The B.T.H. type "J" magneto, the rotor, plan view showing contact breaker and stationary armature, main housing assembly, the contact breaker and distributor, section on vertical centre line, the automatic timing governor and driving spindle |