The 142 6 inch plastic dial caliper with inch readout can make inside, outside, depth and step measurements in inches or millimeters. Made of high-strength fiberglass-reinforced plastic (FRP)Easy-to-read dial with glare-free lens cover is color-coded to highlight graduations of hundredths of an in. and 64th of an inchBar has in. and mm graduations on front and fractional in. conversion table on backNo-glare easy-to-read dial with adjustable bezelFreewheeling friction roller for repetitive and accurate readingsFractional conversion table on back0 to 6 in. measuring capacity