Screw pitch measuring machine 3"x7". Designed by N.P.L. and made by G. Cussons Ltd in 1942. Complete with R7/8" standard thread test piece Screw pitch measuring machine 3"x7" 1942
Professor Reynold's model to show effect of balancing reciprocating parts of an engine Professor Reynold's model to show effect of balancing reciprocating parts of an engine circa 1902
Barraclough's thermodynamic surface model Barraclough's thermodynamic surface model and a copy of same 1925-1930
N.P.L. Horizontal projection machine, without stand or screen; dated 1916 N.P.L. Horizontal projection machine 1916
Projection screw thread measuring apparatus of 1917 Projection screw thread measuring apparatus of 1917 1917
Screw pitch measuring machine designed by E. M. Eden designed c. 1915, at the NPL, Teddington, made c. 1919, with a wooden accessory box. Screw Pitch Measuring Machine 1915-1919
Apparatus for measuring the modulus of torsion, by G. Cussons Ltd., Manchester Apparatus for measuring the modulus of torsion 1908-1971
Water-cooled gas sampling system for vehicle emissions testing by G. Cussons Ltd. (to be drained of water before transit). On castors. Very incomplete, 1975 - 1980. Water-cooled gas sampling system for vehicle emissions testing by G. Cussons Ltd 1975-1980
Patent ribbon Atwood machine by G. Cussons Ltd, Manchester. Cussons & Johnsons Patent. With two timers Patent ribbon Atwood machine by G. Cussons Ltd 1920-1960
Clark's patent optical smoke box by G. Cussons Ltd., The Technical Works, Broughton, Manchester, No. P3365/29, post-1928 Clark's patent optical smoke box by G. Cussons Ltd. 1928-1971
Includes photographs, plans and catalogues. Photographs, plans and catalogues of switchgear manufactured by Erskin, Heap and Co. Ltd. 1956-1971