Electronic Tool Sets— Everything you need for fast, accurate measurements. Each set includes a 0-6" (0-150 mm) range caliper, a 0-1" (0-25 mm) range micrometer, batteries, and a case. All have position memory, also known as absolute (ABS) positioning, which lets you set the caliper or micrometer to zero at any point and store the position in memory for the life of the battery. Tools can also "freeze" a reading to keep it displayed even if the jaws or measurement faces are repositioned (unless noted). Caliper— All take inside, outside, and depth measurements in 0.0005" (0.01 mm) increments. Stainless steel with a satin finish. Accuracy is ±0.001" (±0.025 mm). Micrometer— Measurements are in 0.00005" (0.001 mm) increments. Steel with carbide spindle and anvil faces. Accuracy of Mitutoyo is ±0.00005" (±0.001 mm); Starrett is ±0.0001" (±0.0025 mm); economy is ±0.00015" (±0.003 mm). Mitutoyo tool sets include micrometer wrench and wood case. Caliper jaw depth is 1 9/16".