툴박스 패키지: 자·수평계·각도기

This is a collection of tools that measure length, tilt, angle, atmospheric pressure, and brightness using smartphone sensors. We have packed five frequently used functions into a single app.

■ Ruler — Measuring length using screen scales

Draw centimeter scales on the screen to measure short lengths. The device automatically adjusts the scale intervals by reading the screen information it reports, and for more precise adjustments, you can hold a credit card or ID card against the screen to calibrate it manually. Since these cards all meet the ISO/IEC 7810 ID-1 standard (85.6 × 54 mm), they serve as standard rulers found anywhere.

■ Level — Converting tilt to degrees (°)

It displays the horizontal and vertical tilt values ​​as numbers, and a circular dial bubble indicates at a glance which direction the object is tilted. It notifies you with color and vibration when the object is level, allowing you to adjust it without looking at the screen.

■ Protractor — Measuring angles with the camera

Overlay angle lines onto the camera screen to measure the angle of an actual object. The measurement results can be saved as a photo.

** ■ Barometer — Ambient pressure in hPa

It displays the current pressure along with what the value means and the minimum and maximum range while you are viewing it. This is because it is difficult to determine whether a value is high or low based on the number alone.

■ Illuminance Meter — Ambient brightness in Lux (lx)

Used to check if the brightness of your desk or workspace is sufficient. It displays both the meaning and the range in the same way as the barometer.

■ Key Features

· Supports a dark theme and follows system settings.

· Measurement values ​​are displayed as fixed-width numbers that remain stable even when the digits change.

· Accessibility labels are added so that screen readers can read the values ​​and ranges.

· Scales and dials are repositioned to fit the screen on tablets and landscape mode.

· Does not request unnecessary permissions.

■ Permissions

· Camera — Used only to display camera footage on the screen in the protractor. Does not record audio.

· Save Photo — Used only when the save button is pressed in the protractor. Does not read photos stored on the device.

■ Things to Note

· The barometer and light meter only work on devices equipped with the corresponding sensors. If a sensor is missing, the app will notify you.

· The ruler scale is drawn based on screen information reported by the device. Since there may be discrepancies depending on the device, please calibrate the card first if precise measurements are required.

· This app contains advertisements.