Double Directional Head Switch.
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--- "DO IT YOURSELF" ENTRY ------- PURPOSE: Head operated switch which turns on if head is held upright and off if the head tilts too far forward or back, to encourage a child to keep her/his head in an upright position. Materials include 2 glass mercury switches, 4 feet of 2 conductor, 22 gauge stranded wire, a subminiature size plug, a strip of cardboard, soldering iron, and hot melt glue with applicator gun. Describes and diagrams construction of the switch. The switch may be attatched to the child's hair with a barrette, or attached to a cap or hat. SKILLS REQUIRED: Soldering. Assembly. AUTHOR: Burkhart, L J TITLE: More Homemade Battery Devices for Severely Handicapped Children With Suggested Activities REF: Millville, Pennsylvania: Linda J Burkhart: p 17-20 NARIC CALL NUMBER: R2509 PAGES (including cover): 5 1982.
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