Basically customized, a new digital caliper for 2011 is the Feedback Chain Gauge. Since it is digital, it is quite pricier than its competition but it guarantees reliable quality.
Displayed reading will be either imperial or metric. Chain with figures of 0.00 and 0.40mm means fresh, 0.40-0.80mm means there is wear, and .80mm and higher means replacing is needed. For later inspection, save the reading by locking the arms with the small brass screw.
For impeccable correctness, reset the unit after 30 readings. After five minutes of inactivity, the display cuts out to save battery life. Aside from a carry case, the 2011 Feedback Chain Gauge comes with a spare 1.5V watch battery and a jeweler’s screwdriver.