This is a small item which can be carried in your toolbox or even a for pocket. It has magnets at the bottom to attach to any metal surfaces.
This is a Digital angle measuring tool which is ideal for:
checking/transferring angles
installing shelves and cabinets
levelling tiles and picture frames
measuring sloping roof angles
fitting windows and doors
and much more

Features:

Working range of angle measurement 4-90 degrees
Anti-vibration;
Automatic LCD backlight;
Finds the angle on any surface (Table Saw, Miter Table, ect.).
Angle display in degrees;
Absolute and relative measurements of angle;
Magnetic Base securely clings to saw blades for hands free use.

Specification:
Measuring angle range: 4 X90 degree
Accuracy: 0.2 degree
Resolution:0.1 degree
Illuminated LCD display
Battery: 1 X AAA Battery (not Included)
Working temperature 10°C-+50°C

Package include:
1 x Spirit tool
1 x Package bag
1x Package box

Working range of angle measurement 4-90 degrees