The description and use of a proportional camera obscura, with a solar microscope adapted thereto. Invented and sold by B. Martin in Fleet-street
Published: 1770
Place of publication: [London
Language: eng
Format: Microform
Notes: With, on verso: 'The use of a new hydrostatic balance.'.

Microfilm. Woodbridge, CT Research Publications, Inc., 1991. 1 reel ; 35mm. (The Eighteenth Century ; reel 4655, no. 06).