Schiffbauer, William H. <br/><br/>
Passive encoder for range knobs 
by William H. Schiffbauer 
 - [Washington, D.C.]  U.S. Dept. of the Interior, Bureau of Mines  1983 
 - 8 p.  ill.  28 cm. 
 - Information circular  8939 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Computer interfaces
<br/><br/><label>Dewey Class. No.: </label>622 s