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Signature	Maker	Instruments	Comments	Location	References
VOLKMER, JOHANN GEORG	Germany, 1616-93, MIM		probably the son of Johann Melchior Volkmer; discovered that the magnetic variation of Nürnberg in 1677 was 5° W instead of the 8° E used since the time of Hans Reinmann; made sundials.	Nürnberg.	Michel 2 & 3.
VOLKMER, JOHANN GEORG	Germany, 1616-93, MIM		probably the son of Johann Melchior Volkmer; discovered that the magnetic variation of Nürnberg in 1677 was 5° W instead of the 8° E used since the time of Hans Reinmann; made sundials.	Nürnberg.	Michel 2 & 3.

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