This AP-8 features an engineer’s handy automatic level with accuracy of ±1.5mm in 1km double-run leveling and friction brake for faster operation. Moreover, an endless horizontal drive with control knobs on both sides, water-resistant construction for use under dusty conditions or in light rain, and the option to mount on a flat- or spherical-head tripod all contribute to enhanced operability. Optional diagonal eyepiece lens attachments for use in confined spaces are also available.