There is no advertising or extra feature is a simple ruler.
And easy to read in the step-type memory.
Read mistake decrease.IOS app version appeared in Kaidan scale series.

- Calibration function of length per unit.
- The switching function display units in cm and mm.
In addition to the above,the following features in the paid version.
- 0 reset function.
- Preset function of the measured values.
- Color change function.
- Line two moving function.
- A display character of measurements can drag.