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There are 2 objects associated with "JacobScherer".

Calibration table for the Marinoni position micrometer by J. Scherer

Calibration table for the Marinoni position micrometer by J. Scherer

On the last page of volume IV of the Records of the Specola di Bologna, dated May 1734, there is a calibration table for the micrometer written by Eustachio Manfredi (1674-1739), who was the first ast...

Marinoni position micrometer by J. Scherer, Vienna, 1732: brass, length 24.5 cm

Marinoni position micrometer by J. Scherer, Vienna, 1732: brass, length 24.5 cm

It is almost certainly the only remaining example of the micrometers designed by Giovanni Giacomo Marinoni from Udine (1676-1755). Marinoni sent to Eustachio Manfredi (1674-1739), first Director of th...