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Description: | Magnetic correcting device
Consists of a turn screw with a crossbar. Two bar magnets are fitted onto a central column by brass blocks. The ends of the magnets are fitted into the ends of the crossbar. When the turn screw is revolved the bar magnets are moved in increasing or decreasing arcs.
caption: Record Shot - Do not reproduce. | Publisher: | "http://collections.rmg.co.uk/" | Rights holder: | "Royal Museums Greenwich" | Subjects: | magnetic correcting devices | Source: | Royal Museums Greenwich | Identifier: | http://collections.rmg.co.uk/collections... | Go to resource |
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