Calibration table for the Marinoni position micrometer by J. Scherer
|
Object notes Associations
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 astronomer of the Bologna Observatory. It gives the relation between a turn of the micrometric screw and the angle measurement.
Web links
Related Objects
Source
Object contributed by Museo della Specola, Department of Astronomy, Università di Bologna
