... can quickly switch the side of the disc, and can not interrupt the process in operation during the operation. 8, the spring arm with ... to disconnect, in particular, need to facilitate the dentist's surgery. 1, the primary mirror tilting binocular tube continuous range of> ... 20mm fine-tuning9, built with orange and green filter10, the maximum extension length of the rack arm ≥ 1000mm11, rack vertical ...