BM1 Bosch Positioning Device BM1 Bosch Positioning Device features a micro-fine, height-adjustment system for quick horizontal level adjustments, versatility to work with a variety of levels and a knob to adjust horizontal line height while mounted which eliminates from having to remount tool if not at correct levels. BM1 Bosch Positioning Device features very strong magnets for mounting to metal surfaces as well as other mounting systems such as slots for screws or mails, clip attachment for ceiling grids and raceways for optional straps. BM1 Bosch Positioning Device has retractable feet making it freestanding to use as a mini tripod and has two different threaded mounts on the bottom (1/4in and 5/8in-11).