Astronomical spring clock by Samuel Watson, believed to have belonged to Sir Isaac Newton Clockmakers 1690-1710
1 Centre bit, with lead around it Centre bit, with lead around it James Watt's Garret Workshop 1790-1819
Weather compendium combining cistern mercury barometer, alcohol thermometer and thread hygrometer by George Graham, Fleet Street, London, 1739 Weather compendium by George Graham Meteorology 1739
1 Piece of brass tubing screwed one end, and piece of lead pencil in Brass tubing screwed one end, piece of lead pencil inserted James Watt's Garret Workshop 1790-1819
2 Pieces of mahogany, 2’8” x 1” x ¾”, and 1’8” x 1” x ¾”, one with two pieces of lead fastened to it by thumbscrews Two pieces of mahogany, one has lead attached James Watt's Garret Workshop 1790-1819
1 Piece of semi-circular cast lead with steel arm screwed on. Try-square from James Watt's workshop James Watt's Garret Workshop 1790-1819
1 Packet, tied to wood lid, addressed “James Watt, Harper hill, containing 1 Brass plate 8⅛” x 8⅛” x ½” for grinding glasses, 1 Brass plate 6⅛” x 6⅛” x 7/16” for grinding glasses, 1 Brass plate 4” x 4” x ⅜” for grinding glasses, 1 Lead plate 6” x 5¼” x ½” with 4 holes Packet, tied to wood lid, addressed “James Watt, Harper hill James Watt's Garret Workshop 1790-1819
Portion of first underground cable laid in London, unknown maker, London, England, 1844 portion of first underground cable laid in London, 1844 Telecommunications 1844
