Total toe measurement of car

This is an application that measures the azimuth of the left and right tires with the sensor of the smartphone and calculates the total toe from the tire size.
It is an application that assumes simple measurement at the time of maintenance and adjustment of the leg.


■ Attention
· This application uses the free version application "Total toe measurement azimuth performance test of car"
We recommend purchasing after confirming the measurement performance of the azimuth of your smartphone.

· Purchasing and using this application is at your own risk.


■ How to use
① Select the sensor to be used for azimuth measurement.
In case
· The azimuth angle is calculated from "inclination sensor" and "acceleration sensor + geomagnetic sensor"
Since it can measure from two types, please choose the one with stable measurement value.

· When the smartphone is leveled and the upper part of the liquid crystal is oriented north,
Please check that the azimuth angle is 0 degree. In case

· When the inclination angle and rotation angle are brought close to 0 degree (horizontal), the measured value of the azimuth angle becomes easy to stabilize.

※ The accuracy of each sensor varies depending on the model of the smartphone,
It depends on the performance of the device installed in the smartphone and the surrounding environment.


② Measure the azimuth angle of the left and right tires.

· Leave the smartphone horizontal so that the direction of the top of the liquid crystal and the traveling direction of the tire are the same (parallel)
Measure the azimuth of the tire.

※ Example) When measuring the left tire, it becomes an image to measure while placing the right part of the smartphone against the tire.

In case
③ Select the tire size.


④ The calculation result of the total to is displayed by the calculation button.

· If the calculation result is minus, it is toe-in, plus it becomes toe-out.