With double-swivel articulated arm and 20mm collar. The clamped device always remains vertically aligned. Thus, for example, Holes exactly running perpendicular to the workpiece surface! Preselectable drill depth using depth control with easily readable scale. An adjustable spring automatically pulls the device after the drilling in the upper rest position. Flat-milled, solid base plate with 200 x 200mm usable table area and two continuous T-slots according MIRCOMOT standard (12 x 6 x 5 mm). Stable drill column (Ø 45 mm, 500 mm long).