Spoiler
Clue:
The black bar balanced at the bearing is magnetic and was "pointing" North/South
The black bar balanced at the bearing is magnetic and was "pointing" North/South
What am I?
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Jezza
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What am I?
So what am I?
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Jerry
I’ll be more enthusiastic about encouraging thinking outside the box when there’s evidence of any thinking going on inside it
I’ll be more enthusiastic about encouraging thinking outside the box when there’s evidence of any thinking going on inside it
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BobH
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Re: What am I?
A specialty compass?
Bob's yer Uncle
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Jezza
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Re: What am I?
That is what I thought when I first saw it and then noted the outer dial went from 0-90 and/or 90-0 on each quardrant.
Jerry
I’ll be more enthusiastic about encouraging thinking outside the box when there’s evidence of any thinking going on inside it
I’ll be more enthusiastic about encouraging thinking outside the box when there’s evidence of any thinking going on inside it
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BobH
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Re: What am I?
I noticed the 90° quadrants but thought they might be useful to some form of navigation unknown to me. Given that it has a needle pointer, I presume the device is used flat rather than upright. Might it be an angle finder for construction or mapping?Jezza wrote:That is what I thought when I first saw it and then noted the outer dial went from 0-90 and/or 90-0 on each quardrant.
Bob's yer Uncle
Dell Intel Core i5 Laptop, 3570K,1.60 GHz, 8 GB RAM, Windows 11 64-bit, LibreOffice,and other bits and bobs
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HansV
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Re: What am I?
It is a
Spoiler
Tangent galvanometer, or rather, part of it - see here.
Best wishes,
Hans
Hans
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Jezza
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Re: What am I?
to HansI was clearing out my Father's study yesterday and there was a box of stuff labelled with my name and it contained my Grandfather's old Royal Artillery Prism Compass and this galvonometer, I have no idea where it came from but Dad was very resourceful
Jerry
I’ll be more enthusiastic about encouraging thinking outside the box when there’s evidence of any thinking going on inside it
I’ll be more enthusiastic about encouraging thinking outside the box when there’s evidence of any thinking going on inside it
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StuartR
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Rudi
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Re: What am I?
Hans's grandfather must have also left one in the attic for him! 
Regards,
Rudi
If your absence does not affect them, your presence didn't matter.
Rudi
If your absence does not affect them, your presence didn't matter.
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Leif
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Re: What am I?
Not to diminish Hans' immense knowledge and abilities, but a Google Image search for philip harris brass is what I would have done...StuartR wrote:Wow, what a fantastic find. How on earth did Hans identify it?
(Currently showing as image numbers 13 & 22)
Leif
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HansV
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Leif
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Jezza
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Re: What am I?
So did I 
Jerry
I’ll be more enthusiastic about encouraging thinking outside the box when there’s evidence of any thinking going on inside it
I’ll be more enthusiastic about encouraging thinking outside the box when there’s evidence of any thinking going on inside it
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BobH
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Re: What am I?
Great find, Jezza!
Bob's yer Uncle
Dell Intel Core i5 Laptop, 3570K,1.60 GHz, 8 GB RAM, Windows 11 64-bit, LibreOffice,and other bits and bobs
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