Brusa, Giuseppe, <br/><br/>
The vertical stackfreed :  mechanical evidence and early eye-witnesses / 
Giuseppe Brusa, John H. Leopold. 
 - [16] pages :  illustrated ;  21 cm 
<br/><br/> In: Nuncius. - Firenze. - Anno 12 (1997), fascicle 2, pages 412-426. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Clocks and watches--Design and construction.<br/>Clocks and watches--Calibration.
<br/><br/><label>Subjects--Index Terms: </label>History Italy Vertical stackfreed Olschhi Leo (Editor) Pocket Watch