Bubble Level, Calculator and a Ruler. Measure angle, hang a picture straight on, you compute something or they measure from objects. Also suitable for hobby craftsman or if no other show business are available.
Buble Level: - Virtual Bubble - Horizontally, vertically, spirit level - In degrees - Single angle, total angle (360 °) - Highly accurate
Calculator: - Simple calculator with basic arithmetic - Multiple calculation (for example 3 +4-2/3 =) possible
Ruler: - Ruler in centimeters or inches - Calibration, i.e. can be adapted to the screen - Absolute accurately adjusted - 64cm max
Requirements: - Windows 8 - Tablet PC or Notebook with G-Sensor (accelerometer)