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Compass Plotting (P-7590)
Magnetic needle mounted in a circular dish, having printed scale at the inside of the bottom, fitted with glass on the top. Diameter : (a) 12mm (b) 16mm (c) 20mm (d) 25 mm (e) 38 mm (f) 50 mm (g) 75mm
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Compass Plotting (P-7595)
Magnetic needle mounted on pivot in aluminium case with both sides glass with cross lines at 90°. (a) 20 mm (b) 25 mm (c) 50 mm
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Compass Pocket (P-7600)
Magnetic needle mounted in metal case with hinged cover, glass, dial marked with principal points of the Compass, a locking mechanism 45mm dia
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Compass Pocket (P-7602)
45 mm dia in plastic case with glass cover.
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Magnetometer Compass (P-7605)
A small magnetic needle having 100 mm needle at right angle in a tough plastic case. Cord marked with points of the compass and degrees. Can be used in magnetometer experiments.
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Mariner’s Compass (P-7615)
Magnetic needle in Aluminium bowl with gimbals in polished wooden box with sliding cover, dia 75 mm approx.
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Deflection Magnetometer (P-7630)
Compass box fitted on polished wooden base made of non-wrapping wood with meter scale alongside its length. Compass box is removable.
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Vibration Magnetometer (P-7635)
This is used to compare the magnetic moments of magnets and to determine moment of inertia. It consists of a box with glass doors. The top of case is slotted and carries a glass tube fitted with a simple torsion head to support a stirrup to carry magnets etc. etc. The base of the box is marked with longitudinal index line. Supplied complete with one each 50 and 100 mm bar magnets and one each 50 and 100 mm brass bars.
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Magnetic Needles (P-7640)
Carbon steel with brass cup bearing for pivoting, accurately balanced Length (a) 5 cm (b) 7.5 cm (c) 10 cms
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Stand For Magnetic Needle (P-7650)
Plastic base with non magnetic pillar supporting a steel needle pivot without needle
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Dip Needle (P-7660)
With Cobalt steel needle, 10 cm long, graduated quadrant fully rotatable on metal base, divided at 45°.
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Dip Needle (P-7665)
With steel needle 10cm long on jeweled bearings, with circular metal scale, 13cm dia. and anti parallax mirror, both rotatable about vertical axis. Aluminium base 15cm dia. marked at four quadrants. Complete with extra needle dimensionally identical to first but un-magnetized.
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