[英制轉公制與國內術語]

  半分 = 1/16"  = 0.15875cm
  一分 = 1/8"   = 0.3175cm
一分半 = 3/16"  = 0.47625cm
  二分 = 1/4"   = 0.635cm
二分半 = 5/16"  = 0.79375cm
  三分 = 3/8"   = 0.9525cm
三分半 = 7/16"  = 1.11125cm
  四分 = 1/2"   = 1.27cm
四分半 = 9/16"  = 1.42875cm
  五分 = 5/8"   = 1.5875cm
五分半 = 11/16" = 1.74625cm
  六分 = 3/4"   = 1.905cm
六分半 = 13/16" = 2.06375cm
  七分 = 7/8"   = 2.2225cm
七分半 = 15/16" = 2.38125cm
  八分 = 1"     = 2.54cm