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Magnet
Magnet (7 cm). Brass rod deflector with carrier in fitted wooden box.
MS note in box: "Deflecting magnet used for obtaining Scale Value of the Greenwich North Force Variometer 1915 - 25"
Reverse side of note: "The effective field of this magnet was 152g at 30 cms in 1939 March. or 64g at 40 cms H.M.W."
MS note in box: "Deflecting magnet used for obtaining Scale Value of the Greenwich North Force Variometer 1915 - 25"
Reverse side of note: "The effective field of this magnet was 152g at 30 cms in 1939 March. or 64g at 40 cms H.M.W."
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Object Details
| ID: | AST0728 |
|---|---|
| Collection: | Astronomical and navigational instruments |
| Type: | Magnet |
| Display location: | Not on display |
| Creator: | Unknown |
| Date made: | circa 1915 |
| Credit: | National Maritime Museum, Greenwich, London |
| Measurements: | Overall: 21 mm x 88 mm x 26 mm |