284 - "Camalot" rock climbing jam cam device
285 - Toy flying wing glider
286 - Folding crank or key for something
287 - Wing nut key
288 - Photographic exposure meter
289 - 45 rpm adaptor for record changer
Bob (Chief Pilot, White Knuckle Airways)
284. Rock climbing device to wedge into cracks, etc.
285. Styrofoam glider
286. Device for creating wire clamps.
287. no good guess or idea
288. math/measuring device similar to a slide rule
289. 45 RPM record spindle. Is my age showing now?
(top posted for your convenience)
Keep the whole world singing . . . .
DanG (remove the sevens)
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