... : 2 second Tracking: 0.8 second display Monitor Double test 20, 4-line dot matrix LCD display with backlight. Horizontal angle ... Degree Mils others Level of control cell valuesLong spirit level:20 ”/ mm, 30” / mmCircular level: 8 ’/ 2mmOptical plummetImage: AsMagnification: 3XMinimum focal length ...