`Scalamp' moving coil reflecting galvanometer with built-in lamp and scale, for potentiometer Microscopes 1955-1964
Moving-coil galvanometer "Microid Adaptable" pattern by Griffin and Tatlock Science Teaching 1932-1954
Unipivot Versatile Galvanometer by the Cambridge Instrument Co. Ltd. Electricity and Magnetism 1960-1962
Sensitive suspended-coil `pot' galvanometer fitted with pointer and mirror Science Teaching 1926-1980