Author: John MartinJohn Martin Date: Aug 9, 2007 13:06
On Aug 9, 3:57 pm, "Leo Lichtman" worldnet.att.net> wrote:
> 1055--Totally baffling. Clearly, the base is made to screw into a light
> socket, but not for the purpose of making electrical contact. I suspect
> that it simply uses the mogol base as a convenient way to hold it. It
> measures a number of angles fairly accurately, and yet, there is no obvious
> way to input anything. Also puzzling is the brass "weight" near the tip of
> the pointer. It looks like you could adjust that up or down like the weight
> on a metronome, but WHY?
Andrew Mawson thought that it might be a vibration frequency
indicator, and I think you are both on the right track. I'd suggest
that it might be for measuring the frequency of AC current. Adjust
the length of the arm until the amplitude of vibration is the greatest
(that's what the semi-circular scale is there to measure), and read
the frequency off the linear scale.
John Martin
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