Account of a free escapement, with considerable reduction of friction
By: by Urbain Jurgensen.
Series: Landmarks of science II
Publisher: Printed for A. Constable
Published: 1822
Place of publication: Edinburgh
Language: eng
Format: Microform
Number of pages: 151
Subjects: Chronometers; Horology
Notes: Translated and abridged from Schumscher's Astromische Nachrichten.

Includes bibliographical references.

Microfiche. New York, N.Y. Readex Microprint Corporation, [1985?] (Landmarks II)

In The Edinburgh philosophical journal, v. 7 (1822), p. 148-151.