Carpenter, William Benjamin, 1813-1885 · London : John Churchill · leaf 136
now gene-rally preferred. The arrangement devised by Mr. G. Jacksonallows the divided glass to be introduced into the ordinaryeye-piece (thus dispensing with the necessity for one speciallyadapted for micrometry), and greatly increases the facihtyand accuracy with which the eye-piece scale may be… … Mr. Jacksons Eye-piece Micrometer. B
Microscopy
Internet Archive · Medical Heritage Library · Public Domain Mark 1.0. Free to use for anything.
