2 ms·
(And a real life example of one http://www.fransmaes.nl/genk/en/gk-zw08-e.htm http://www.fransmaes.nl/genk/en/gk-zw08-e.htm (with diagrams!).)
by dbaupp 14y ago
(And a real life example of one http://www.fransmaes.nl/genk/en/gk-zw08-e.htm http://www.fransmaes.nl/genk/en/gk-zw08-e.htm (with diagrams!).)