Features To measure flatness deviation, you will need to use it with a level ruler This thickness gauge can be used to measure widths, clearances and also flatness deviations. Small size and light weight, there is a strip on the handle for comfortable carrying Designed with a vernier so you can read the measurement result easily It is a great tool to use in home inspection, engineering inspection, etc. Specifications: Accuracy: 0.5mm, 0.2mm (optional) Measuring range: 1mm~15mm Item Size: 150*15*17mm/5.9*0.59*0.67" Weight: 105g (approx.) Features: Designed with a vernier so you can read the measurement result easily. Small size and light weight, there is a strip on the handle for comfortable carrying. This thickness gauge can be used to measure gap widths, clearances and also flatness deviations. To measure flatness deviation, you will need to use it with a level ruler. It is a great tool to use in home inspection, engineering inspection, etc. Package includes: 1 x Thickness Gauge Package List