... Geosystems has redesigned the direct drive technology for the Leica TM6100A, using the same Piezo technology that is used in the ... level fine positioning. The fine adjustment knobs on the Leica TM6100A have been strategically repositioned to help make measuring in difficult ... maintenance and are nearly silent.Not only does the Leica TM6100A have a newly designed battery concept, but since the Piezo ...