Gauges have locking jaws and an integral depth gauge. The fractional caliper will read in increments of 1/128" or 0.05mm. The other three calipers all read in decimal inches and millimetres. The two fine-adjustment calipers have a lower jaw stop that locks in place, allowing fine adjustment by using the thumb wheel. (The 6"/15cm fine-adjustment caliper has a maximum opening of 5-1/2".) Storage case included.