TY  - BOOK
AU  - Penman,Laurie
TI  - Practical clock escapements
SN  - 095232704X
PY  - 1998///]
CY  - Derbyshire, England
PB  - Mayfield
KW  - Clocks and watches
KW  - Escapements
KW  - fast
KW  - Escapment Sciene
KW  - Practical making
KW  - Timekeeper (general)
N1  - Includes bibliographical references (page 240) and index
ER  -