Tripod for balloon theodolite Part - tripod Object Number: 1985-805 Pt1 type: tripod Image © The Board of Trustees of the Science Museum
Photograph, engraving of a table teaching making and use of a weatherglass, 1631 Photograph, engraving of a table teaching making and use of a weatherglass
Individual Gill propeller, Model 27106, with polystyrene blades, for measuring a single wind vector. [not in working order]. Current production type, 1992 Wind vector measuring propellor, 1992