purchase of miscellaneous spares for electrical activities--1 pressfit switch 6 amp cmzz009957 2 pressfit socket 16 amp cmzz009963 3 cartridge fuse d type 6 amp spel008987 4 cartridge fuse d type 4 amp spel008985 5 toggle switch dtdt 10 amp spel009421 6 one way switch 15 amp spel009392 7 fuse wire 20 amp spel009023 8 pencil cell 1.5 v r 6 spel010061 9 backlite connector 12 way 05 amp spel009345 10 p v c pipe rigid 25 mm spel009442 11 pvc pipe 1/2 cmzz002762 12 p v c bend 15, 20, 25, 40 mm spel