John F. Ross C.V.I. Technology Graduation on the VERNIER SCALE CALIPER.

ONE GRADUATION = 1 MILLIMETER = 1mm 10mm m

MILLIMETER SCALE

ONE GRADUATION = 0.02mm

BODY

INCH SCALE

SLIDE 4 GRADUATIONS = 4 X 0.025 = 0.100 OR ONE HUNDRED THOU EACH GRADUATION = 0.025 OR TWENTY FIVE THOU

ONE GRADUATION =0.001 OR ONE THOU MOVEABLE JAW

FIXED JAW

NOTE :

The location of the MILLIMETER SCALE and the INCH SCALE on the BODY differs from one manufacturer to another. In other words, one Vernier will show the INCH SCALE on TOP and the MILLIMETER SCALE at the BOTTOM, the other will show reverse arrangement. Also, other Vernier has 50 thou (0.050) graduation instead of 25 thou (0.025)

John F. Ross C.V.I. Technology

How to Read an Inch Vernier Scale Caliper

STEP 1 – ADD ALL GRADUATIONS BETWEEN THE BIG ZERO AND THE SMALL ZERO = 0.900 STEP 2 FIND THE NUMBER ON THE SLIDE THAT LINED UP TO ANY LINE ON THE BODY = 0.016 STEP 3 – COMBINE STEP 1 AND STEP 2 0.900 + 0.016 = 0.916 OR NINE HUNDRED SIXTEEN THOU

John F. Ross C.V.I. Technology

How to Read a Metric Vernier Scale Caliper

STEP 1 – ADD ALL GRADUATIONS BETWEEN THE BIG ZERO AND THE SMALL ZERO = 23mm STEP 2 - FIND THE NUMBER ON THE SLIDE THAT LINED UP ON ANY NUMBER ON THE BODY = 0.12 mm

STEP 3 – COMBINE STEP 1 AND STEP 2 23mm + 0.12 mm = 23.12 mm OR TWENTY THREE POINT TWELVE MILLIMETERS