Directions for making the best composition for the metals of reflecting telescopes: and the method of casting, grinding, polishing, and giving them the true parabolic figure
By: [John Edwards]
Publisher: [W. Richardson for P. Elmsly]
Published: 1787
Place of publication: London]
Language: eng
Number of pages: 60
Notes: Forms the second part of the Nautical almanac for 1787.

ESTC T2959.

Copy 1 Note: p. 57-60, 'Remarks ... By Nevil Maskelyne', and last 2 leaves wanting.