Modification of the "MakerGear M2 Toolholder" by 3DPrinterHowTo. This holder incorporates the support for the dryeti "MakerGear M2 z-axis screw driver and counter nut tightener", removes the large screwdriver that is no longer included with the printer, and adds support for a pair of digital calipers. (Note: Pictured print includes a support slot for a small level, not included in the uploaded file.)Prints without support. Latest version has been tightened up slightly and the caliper support adjusted. Works very well in PETG.