The Vernier Caliper is a
precision instrument that can be used to
measure internal and
external distances extremely accurately. The example shown below is a manual caliper.
Measurements are interpreted from the scale by the user. This is more difficult than using a digital vernier caliper which has an LCD digital display on which the reading appears. The manual version has both an imperial and
metric scale.
Manually operated vernier calipers can still be bought and remain popular because they are much cheaper than the digital version. Also, the digital version requires a small battery whereas the manual version does not need any power source.
(Source : http ://www.technologystudent.com and glue-it.com)
Neiko Stainless Steel 6-Inch Digital Caliper with Extra-Large LCD Screen - Instant SAE-Metric Conversion
