Drill rigs: KLEMM Bohrtechnik GmbH Exact fit. Universal or specific: In each case, KLEMM Bohrtechnik supplies the most suitable drill rig in terms of weight, size, performance, field of application and equipment. More than 25 drill rig types provide the basis for maximum adaptation and individualisation. Klemm 806 – Malcolm Drilling Malcolm Drilling has one of the largest and most up to date equipment inventories in the world. John Malcolm has moved to the forefront in buying the latest in equipment from Europe, using top drives rotary drilling rigs and the fully cased method using oscillators and rotators.