
7 public-domain matches
Micrometer

IS 2967: External Micrometer
Results of Micrometer Comparisons of Jupiter and ' Scorpii in May 1888
A Self-recording Transit Micrometer
Observations of Comet c, 1881 (Schaberle), made at the Cambridge Observatory with the Northumberland Equatorial and Square-bar Micrometer
Observations of the Great Comet (b) 1882 made at the Cambridge Observatory with the Northumberland Equatorial and Square Bar Micrometer
