Directions for making the best composition for the metals of reflecting telescopes
Subtitle: and the method of casting, grinding, polishing, and giving them the true parabolic figure. By the Rev'd John Edwards, B.A.
Series: Eighteenth century -- reel 5634, no. 9.
Publisher: Published by order of the Commissioners of Longitude
Published: 1787
Place of publication: [London]
Language: eng
Format: Microform
Number of pages: 48
Notes: Microfilm. Woodbridge, CT Research Publications, Inc., 1986. 1 reel ; 35mm. (The Eighteenth Century ; reel 5634, no. 9).