telescoping aluminum pole?
On Sun, 10 May 2009 22:01:24 -0500, cavelamb
wrote:
You know those magic telescoping poles that can lock?
Useful for boat poles, spinnaker and jib poles, or changing light bulbs.
Anybody have a clue how these things work?
They're slightly elliptical, so they sort of cam lock when the mating
parts are rotated relative to each other.
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