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10 all over. The type may also be combined with an explosive charge in the tail end.

Type with explosive charge in the nose (N.Exp.I.B.)

This is a 1 kg. variant with a small explosive charge in the screw-in nose plug, and the charge is detonated by the heat of the burning electron casing between half a minute and five minutes after impact. The bomb may be identified by the very slight circular groove or recess formed in the flat nose by the screw-in cap 1⅝ in. diameter covering the explosive charge. The bomb is known to the Germans as the B 1 EZ.B or B 1.3 EZ-B, and was at first marked by a red painted B on the flat of the nose: a later marking is ZB or B stamped on the flat of the nose. The only specimens found so far in the U.K. were of the type with steel nose and were marked DKB 1938 on the body with a B stamped on the nose. (See Figure 14.)





Type marked INC (French Type) This has the same general characteristics as the standard model, but is of a slightly different pattern. The general dimensions are as follows: Overall length 13.8 in.; diameter, 2 in.; length of tail about 5 in.; width of tail, 2 in.; weight, o 96 kg. (2.1 lb.).

The case is of magnesium alloy with a magnesium type filling and impact type nose fuze. The body is painted red up to 6¾ in. from the nose which is brown coloured; the tail is painted a glossy blue-green. Slight variations in these colours have been observed.

No explosive charge has so far been experienced in this type, the general appearance of which is shown by Figures 11A and 11B which also show the two patterns of tail vane construction observed in this type of bomb. In one case there are eight cast metal vanes, and in the other six sheet metal vanes enclosed in a strengthening hoop. The markings on the body of the bombs illustrated are in black and red as follows:—