CONSTRUCTION. Bomb resembles the SD 1 H.E. bomb and is approximately the same weight and size.

Body is constructed of concrete reinforced with irregularly shaped metal chippings. (See fig. 64.)

A normal eight-vane type of tail unit is secured to the body by a bolt embedded in the concrete cast.

In the nose of the bomb a length of concrete-filled, metal tubing is inserted to resemble the AZ (73) A fuze.

Lengths of iron wire soldered to the tail securing bolt and to the metal tubing in the nose of the bomb serve to strenghten the cast concrete.

COLOR AND MARKINGS. The specimen examined was unpainted and devoid of markings.

Figure 64 – SD 1 Type Practice Bomb