The Elcometer 211 is a mechanical coating thickness gauge ideal for use where electronic gauges cannot be used, such as in inflammable atmospheres. It has a "v" grooved base and clear scale that makes it suitable for measuring thicker coatings. It is portable, accurate to within 5% and can be used on cold surfaces. It is one of the most popular mechanical gauges due to its simple design and wide measurement ranges from 0-1000um or 0.65-6mm.