Items on display include telescope models, measuring machines, altazimuth instruments by Dollond ( 1820 ) and Bamberg ( ca 1900 ), calculating machines, early office equipment, early electronic devices, lenses from early telescopes including the photographic telescopes of Gill, a clockwork telescope drive, a signal pistol, chemistry equipment etc.
12.
C Force never received its vehicles as the US merchant ship " San Jose " carrying them was, on the outbreak of the Pacific War, diverted to Manila, in the 3-inch mortars or for signal pistols, deficiencies which the British undertook to remedy at Hong Kong, although not at once.
13.
Exceptions to the ban include muzzle-loading guns, pistols of historic interest ( such as pistols used in notable crimes, rare prototypes, unusual serial numbers, guns forming part of a collection ), guns used for starting sporting events, signal pistols, pistols that are of particular aesthetic interest ( such as engraved or jewelled guns ) and shot pistols for pest control.
