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A 6in Brass Protractor,
A 6in Brass Protractor, signed in script to the centre 'Norris 13 Bull Street, Birmingham', with previous Christies auction sale sticker to revers...
Circular Slide Rules,
Circular Slide Rules, Fowler's Long Scale Calculator, double-sided, cased, with a Fowler's Universal Calculator,
Circular Slide Rules,
Circular Slide Rules, Fowler's Jubilee Magnum Extra Long Scale calculator, in leather case, with a Fowler's Textile Calculator Type B, in leather ...
Circular Slide Rules,
Circular Slide Rules, An Early Otis King Model K calculator, white scales on black, serial no. A6785, cased with instructions, with a Halden Calcu...
Two Brass Surveyor's Crosses,
Two Brass Surveyor's Crosses, in brass, one with compass, both cased ...[more]
A WWI British Military Telescope Tripod, short tripod, for either signal or scout regiment telescope, clamps marked 'Sig Tel Stand MkV no. 322, C...
A Fowler's Universal Calculator,
A Fowler's Universal Calculator, circular slide rule, in leather case, good condition, in leather case
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