Engineering Metrology

engineering metrology

• Vernier scales • Like a normal scale with extra secondary scale subdividing major increments • Secondary scale is one increment shorter than a main scale therefore indicating relative distance between two offsets of the main scale • On imperial sliding vernier scales the main scale divisions are 0.050” apart, and on the vernier scale they are 0.049”, giving a reading of 0.001” per graduation. • On metric sliding vernier scales the main scale divisions are 1mm apart, and the vernier scale they are 0.98 mm, giving a reading of 0.