Speedometer which also measures trip and total mileage
1915-1945
One linear interferometer assembly Ident.10703A
1973
One remote interferometer assembly
1973
Pilots Projector Gun Sight
One Small cube laser reflector
1973
Goniometer eye-piece
circa 1950
German precision barometer in wooden box
Projection screw thread measuring apparatus of 1917
1917
Prestwich micrometer fluid comparator
1945-1955
Level comparator - Matrix
1956