This sturdy but light-weight (110g or 4orzs) pocket-size instrument is suitable for every kind of work. Scale reading is easy through a built-in-parallax-free lens.
Sighting and scale reading are done simultaneously. There are no screws to turn, no bubbles to centre, and nothing to adjust.
Where space is limited, inclinations can be read by placing the instrument on the inclined surface and reading the angle through the side window.