Has one coil forming a vertical loop. There is a screw terminal at the zenith possible for suspending a magnetic pointer. In the centre is a +/- 90 degree dial on the horizontal wooden shelf. All are mounted on an brass pedestal with ebonite base…
Many sheets of transparent paper with a ruler printed on it; top scale measures from 25 to 0 then 0 to 25; bottom scale measures from 0 to 50 cm; under scale is printed "Scale A, Tracing Paper". Maker's Name reads: " W.G. Pye & Co." wrapped in brown…
11 circular glass lenses to cover the eye set in metal frames with small circular handle for holding with thumb and forefinger. Part of colour blindness kit. Colours: 4 black, 1 red, 1 turquoise, 1 orange, 1 green, 1 light royal blue, 1 dark royal…
Set of six 'Peter-Pan' gas mantles in cardboard tubes with brass-coloured lids; written on tubes, 'Registered N. 409807', 'Made in Italy'; The mantle is made from oxides that, when heated, glow brightly in the visible spectrum.
A spot galvanometer for the Hilger Spekker Absorptiometer H760301. Analogue display from 0-16 in unit divisions. On top, plate reads "Cambridge Instrument Co. Ltd. England" and bears the company logo.
Custom-made wooden box with brass coloured hindges containing an apparatus for levelling angles. Instrument is rectangular in shape with brass components with two view finders in top corners; pendulum-type gauge which measures "inclination per FOOT"…
