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Date
Model showing a pair of cones enveloping a sphere and a plane

Model showing a pair of cones enveloping a sphere and a plane

1886-1888
Model to show two intersecting planes

Model to show two intersecting planes

1886-1888
Ribbon Atwood machine, 1950-1965.

Ribbon Atwood machine, 1950-1965.

1950-1965
Newall measuring machine 1904

Newall measuring machine 1904

1904
Ribbon Atwood machine, 1950-1965.

Ribbon Atwood machine, 1950-1965.

1950-1965
Drysdale’s curve-drawing integrator

Drysdale’s curve-drawing integrator

1910
Mirror for the projection screw thread measuring apparatus

Mirror for the projection screw thread measuring apparatus

1917
Support brackets for the mast of the projection screw thread measuring apparatus

Support brackets for the mast of the projection screw thread measuring apparatus

1917
Part of Barraclough's thermodynamic surface model

Part of Barraclough's thermodynamic surface model

1925-1930
Copy of Barraclough's Thermodynamic Surface Model, 1925-1930

Copy of Barraclough's Thermodynamic Surface Model, 1925-1930

1925-1930
Mirror support bracket for the projection screw thread measuring apparatus.

Mirror support bracket for the projection screw thread measuring apparatus.

1917
Pantograph - Peaucellier linkage by D. Drysdale

Pantograph - Peaucellier linkage by D. Drysdale

1910
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
Barraclough's thermodynamic surface model

Barraclough's thermodynamic surface model and a copy of same

1925-1930
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
1 of 4 demonstration models of engines. Model of steam engine single cylinder with valves sectioned hand turned crank with single eccentric to work the valve., scales on cylinder, slide valve and crank show points of cut off. Made by Cussons Limited, The Technical Works, Broughton, Manchester.

Demonstration model of a single cylinder engine, sectioned

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
Apparatus for measuring the modulus of torsion, by G. Cussons Ltd., Manchester

Apparatus for measuring the modulus of torsion

1908-1971
Atwood machine, paper ribbon type, by Cussons of Manchester

Atwood machine

1900-1940
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
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
Projection screw thread measuring apparatus of 1917

Projection screw thread measuring apparatus of 1917

1917
N.P.L. Horizontal projection machine, without stand or screen; dated 1916

N.P.L. Horizontal projection machine

1916
Professor Reynold's model to show effect of balancing reciprocating unbalanced load testing mechanism

model to show effect of balancing reciprocating unbalanced load testing mechanism

circa 1902
N.P.L. Horizontal projection machine, without stand or screen; dated 1916 ( a sliding plate and vertical adjustment component is missing).

N.P.L. Horizontal projection machine

circa 1917-1919