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verniermore about vernier

vernier


  2  definitions  found 
 
  From  Webster's  Revised  Unabridged  Dictionary  (1913)  [web1913]: 
 
  Vernier  \Ver"ni*er\,  n.  [So  named  after  the  inventor,  Pierre 
  Vernier.] 
  A  short  scale  made  to  slide  along  the  divisions  of  a 
  graduated  instrument,  as  the  limb  of  a  sextant,  or  the  scale 
  of  a  barometer,  for  indicating  parts  of  divisions.  It  is  so 
  graduated  that  a  certain  convenient  number  of  its  divisions 
  are  just  equal  to  a  certain  number,  either  one  less  or  one 
  more  of  the  divisions  of  the  instrument,  so  that  parts  of  a 
  division  are  determined  by  observing  what  line  on  the  vernier 
  coincides  with  a  line  on  the  instrument. 
 
  {Vernier  calipers},  {Vernier  gauge},  a  gauge  with  a  graduated 
  bar  and  a  sliding  jaw  bearing  a  vernier,  used  for  accurate 
  measurements. 
 
  {Vernier  compass},  a  surveyor's  compass  with  a  vernier  for 
  the  accurate  adjustment  of  the  zero  point  in  accordance 
  with  magnetic  variation. 
 
  {Vernier  transit},  a  surveyor's  transit  instrument  with  a 
  vernier  compass. 
 
  From  WordNet  r  1.6  [wn]: 
 
  vernier 
  n  :  a  small  movable  scale  that  slides  along  a  main  scale;  the 
  small  scale  is  calibrated  to  indicate  fractional 
  divisions  of  the  main  scale  [syn:  {vernier  scale}] 




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