PCA-116 gage heads incorporate a standardised LVDT with repeatability better than 0.0001" (0.0025 mm) and linearity within 0.5% of full range output.
The probe shaft is externally sprung and is carried on low friction nylon sleeve bearings. The probe to bearing clearances are designed to minimise problems should contaminants get into the bore.
Units are supplied with replaceable hardened steel tips that thread to the probe with a 4-48 UNF-2 thread. Replacement or alternate tips are available (see page 100). Any 4-48 AGD dial indicator contact tip can also be used.