Description of Bond's isodynamic escapement, for astronomical clocks
Series: Harvard College Library pamphlet digitization program
Publisher: [s.n.]
Published: 1860
Place of publication: Boston
Language: eng
Subjects: Astronomical clocks
Other titles: On a new clock-escapement; Isodynamic escapement for astronomical clocks
Notes: Cover title.

Signed at end: Richard F. Bond.

"From 'Brunnow's astronomical notices,' October, 1860."