| A P55 motor raises/lowers the payload. A crank is used to manually raise and lower the boom. The treads are not powered; the model is pushed to move it. Also, the cab rotates on turret plates. |
| Here's a shot of the boom in the full up position. |
| This Crawler Derrick model was built from a 1950 #12 1/2 set. |
| A P55 motor raises/lowers the payload. A crank is used to manually raise and lower the boom. The treads are not powered; the model is pushed to move it. Also, the cab rotates on turret plates. |
| Here's a shot of the boom in the full up position. |