Details
W. & J. GEORGE LTD., Birmingham
A mahogany Helmholtz-pattern tangent galvanometer, with twin coils mounted on twin diagonals, the centre with brass-cased magnetometer with silvered-scale divided 0-90-0-90-0, aluminium index and anti-parallax mirror, on tapering pillar support to rotating limb with four terminals, on circular base with three levelling-screws -- 15½in.(39.5cm.)high
See colour plate
A mahogany Helmholtz-pattern tangent galvanometer, with twin coils mounted on twin diagonals, the centre with brass-cased magnetometer with silvered-scale divided 0-90-0-90-0, aluminium index and anti-parallax mirror, on tapering pillar support to rotating limb with four terminals, on circular base with three levelling-screws -- 15½in.(39.5cm.)high
See colour plate