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57 the blunt nose of the bomb has three rivet heads in the face and typical markings are shown in the accompanying Figures.

29. BRITISH ANTI-AIRCRAFT SHELLS

British anti-aircraft shells are of the following dimensions:-

(a) 5·25 in.

(b) 4·5 in. × 22¾ in.

(c) 3·7 in. × 17¼ in.

(d) 3.0 in. × 14 in.

(e) 40 mm. × 6·44 in.

The last four are shown in Figure 71 and they may further be recognised by the fact that they have a copper driving band in front of the base and may be distinguished from bombs by the absence of any vanes or attachments for vanes.

30. BRITISH U.P. SHELLS

Two types of U.P. shells are shown in Figures 72 and 73.

(a) That in Figure 72 consists of metal tubular casings, approximately 76 in. long, and with a small head either black or bronze, lacquered, 3 in. in diameter. At the other end are four vanes approximately 8¼ in. long.

(b) That in Figure 73 consists of a tube 36 in. long and 2¼ in. in diameter, fitted with four fins. The following may be found on the ground associated with this shell:—

(i) the long tube with four fins 8¼ in. long and 3 in. wide attached to a parachute; this is harmless.

(ii) A small yellow bomb similar to that described in Section 32 (f) (i), with two parachutes.


 * 3 in.
 * 2 in.

31. BRITISH SMALL ARMS AMMUNITION

Of the small arms ammunition used in British aircraft, the forms most likely to be found are fired cartridge cases, belt links, or spent