Dagnall, H.. , <br/><br/>
Let's talk roundness / 
H. Dagnall. 
 - iv, 77 pages :  illustrations ;  21 cm. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Roundness measurement.
<br/><br/><label>LC Class. No.: </label>TA418.7   / .D33 1976