A Newton and Co. lacquered brass demonstration gyroscope, the base marked Newton and Co Opticians and Globemakers to The Queen, 3 Fleet Street, Temple Bar, London, contained in a pine box with hinged lid fitted 2 weights, 2 adjustment screws and polished steel spike
W E and F Newton Opticians, a 19th Century metal hand cranked instrument marked W E and F Newton Opticians 3 Fleet Street, Temple Bar, London on a tripod base 27cm h x 16cm together with an associated metal triform base 4cm x 14cm