Mitutoyo 500-197-30 AOS Absolute Digimatic Caliper is the best value in digital calipers.
It has a measuring range of 0-8" with .0005" resolution. Equipped with the
exclusive AOS sensor technology which is a patented Advanced Onsite Sensor that
offers improved measurement dependability by increasing resistance to harsh workshop conditions.
This caliper features the electromagnetic inductive (AOS) sensor
providing improved resistance to environmental conditions such as dirt, oil and water that
can cause false readings, an increased battery life of 3.5 years under normal operation
and Absolute (ABS) sensor that eliminates the necessity of setting the reference
when the caliper is powered on. It is also fully compatible with existing Mitutoyo digimatic peripherals
(SPC cables, U-Wave wireless transmitters, etc.)and are priced the same as
the latest 500 Series ABS Caliper models.