TY  - SER
TI  -  Watch and Clock Escapements : :  
AV  - TS 
PY  - 2005///
PB  -  Project Gutenberg, 
KW  -  Clocks and watches -- Escapements
N1  -  Public domain in the USA;  Text
UR  -  http://www.gutenberg.org/ebooks/17021
ER  -