Clocking-in time recorder for employee attendance, by National Time Recorder Company Limited, London, England, 1901-1933. This machine was used by employees at the Royal Aircraft Establishment, Farnborough until 1976. Employee attendance time recorder Farnborough 1901-1933
Trial model for part of Babbage's difference engine, on board Demonstration model of Babbage's Difference Engine No. 1, 19th century. Computing & Data Processing 1871-1900
Experimental microphone in sound box, consisting of two small blocks of wood-charcoal pressed upon each other by a spring, probably made by David Hughes, England, 1878-1890 Experimental microphone in sound box, 1878-1890 Telecommunications 1878-1890
Gower-Bell telephone transmitter, Post Office pattern with porcelain mouthpiece, made by Scott and Wollaston, England, 1881 Gower-Bell telephone transmitter, 1881 Telecommunications 1881
Small cable sections from cable 'tree', decorative souvenir of the 1858 Transatlantic submarine telegraph cable, made by George Rapson, England, 1858. Sections of cable from decorative cable 'tree' souvenir, 1858 Telecommunications 1858
Trial model and spare wheels for Charles Babbage's Analytical Engine Computing & Data Processing c. 1870
1 Piece of wood with thumb-screw and two shifting pieces of brass, screwed to wood Piece of wood with thumb-screw and two shifting pieces of brass James Watt's Garret Workshop 1790-1819
Piece of mahogany 1’8” x 2” x ⅞”, half lapped forming a + with pieces of brass let in Piece of mahogany, half lapped, pieces of brass let in James Watt's Garret Workshop 1790-1819
1 Piece of mahogany 8½” x 1½” x ⅜” small brass swivel handle attached Piece of mahogany, small brass swivel handle attached James Watt's Garret Workshop 1790-1819
Mechanical Powers Apparatus consisting of a balance, pulleys, levers, inclined plane, wheel and axle, screw, compound engine, compound lever, double cone, friction wheels, weights and wedge , complete with original mahogany case, made by George Adams, Fleet Street, London, 1775-1800. Mechanical Powers Apparatus King George III 1775-1800
1 Gutta-percha bulb with piece of brass tube in Bulb tied to brass pipe James Watt's Garret Workshop 1790-1819
1 Small brass pin with pulley wheel on one end Brass pin, with pulley wheel attached James Watt's Garret Workshop 1790-1819
1 Piece of steel and brass, part of brass hinge Part of a brass hinge James Watt's Garret Workshop 1790-1819
1 Piece of steel wire, with brass ring Piece of steel wire, with brass ring James Watt's Garret Workshop 1790-1819
