Barkus, Sarah J, <br/><br/>
Know the escapement / 
by Sarah and Homer A. Barkus. 
 - 1st edition., 1943  ... Text edited and prepared for publication by Russell E. Tanner. 
 - 93 pages including illustrations, forms, diagrams :  frontispiece (group portrait) ;  20 cm 
<br/><br/><label>LCCN: </label>43012639  
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clocks and watches--Escapements.<br/>Clocks and watches--Escapements.
<br/><br/><label>Subjects--Index Terms: </label>EscapmentScie USA Pin lever Adjust escapement Watch (general)