All Moisture Meters with Pins are calibrated to measure wood moisture in percent.
The differences are in measuring range, additional materials to be measured, number of wood species corrections and the capability to add a hand probe or extension cable (C-Models). Besides measuring wood, the mini-Lignos S/D and S/DC, DX and DX/C have calibrations for standard drywall and water resistant panels, exterior and interior panels as well as a reference scale for concrete and other materials.
The Ligno-VersaTec and Lignometer K should be considered as more advanced moisture meters with a wider moisture range and more corrections for different wood species and other materials . And, the Ligno-VersaTec is also a pinless and RH meter.