800-5520 SD-2 Semaphore Driver Couplers The model can be assembled

The model can be assembled with folding roof in open or closed position

1 number unknown

to carry rockets

When running on the water

Centerline and inner wing pylons as well as tail assembly feature polycaps to allow easy detachment for storage

800-5520 SD-2 Semaphore Driver Couplers The model can be assembledThe SD 2 Semaphore Driver is designed for use with the CIRCUITRON TORTOISE and an upper or lower quadrant semaphore style signal. NOTE: Neither the TORTOISE, the signal nor the signal linkage are included. The SD 2 provides all the logic circuitry necessary to drive the signal to all three positions, and is designed to work with CIRCUITRON BD 1, BD 2 or BD 3 Block Occupancy Detectors. Other detection circuits that provide a logic low ( or ground)