Groove spacing is center to center of grooves.
EG4050 Evergreen V-Groove Sliding .050" Spacing (1.3mm)
EG4030 Evergreen V-Groove Sliding .030" Spacing (0.75mm)
Methanol Engine Run in Test Stand Sliding Nut Channels Stable CNC Machined
Arrma Sliding Motor Mount Plate 56 Series, Red ARA320722
Methanol Engine Run in Test Stand Sliding Nut Channels Professional Metal