THE OPEKATOK. it. This dodge is always resorted to in winding ELECTKO-MECIIANICAL MOVEMENTS. Scientific Department. NO. 1. electro-magnets, in order to have the last layer pre- [This department is under the charge of Mr. II. Van Hoeven- sent a smooth and even appearance. … a gas jet, or the flame of a lamp, and allow it to When a current is sent through the magnet A, its be easily constructed with such tools as almost every cool. Then bend to this shape : armature.with the lever B is attracted, and the ratchet operator can handle. A sharp pen-knife, a small…
Telegraph -- Periodicals
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