http://www.practicalmachinist.com/vb/an ... ng-258582/
http://www.practicalmachinist.com/vb/an ... on-231792/

ciekawy noniusz... ukośny ! i inne


http://www.practicalmachinist.com/vb/an ... es-176002/

http://www.practicalmachinist.com/vb/an ... er-220198/

i pierwsza "cyfrówka"...

http://www.practicalmachinist.com/vb/an ... er-112257/