From:
Thomas Maclear
To:
Sir John Herschel
Date:
[1 June 1836]
Source of text:
RS:HS 12.88
Summary:
Believes the wires are 0.2" thicker than the old ones. Dust has settled on the parallel wires of the telescope. Advises how adjustment may be made to JH's micrometer for parallelism.
Contributor:
John Herschel Project