CS8F0 Calibration Station Collimator Add one opticla CCD camera tube for horizontal position base on CS7F. No need observe by eyes, Optical cross reticle can be showing by screen. Avoid eyepiece observe tired error, Improve calibration accuracy. Can calibrate all brand of laser products, line laser level(2 lines laser level,3 lines laser level,5 lines laser level, 8 lines laser level, 12 lines laser level, 16 lines laser level), dot laser level, rotary laser level, auto level, Total Station, Theodolite, etc.. Accept customer-made, our engineer can design according your workshop area, and products requirement. More calibration station detail from: http://www.simaisurveyinginstrument.com/Calibration%20Station.html More products videos from: https://www.youtube.com/channel/UCVgQJEHDZTclZCWsKGDTxKw If you have any questions, please feel free to contact with me. Your prompt reply will be highly appreciated! ...