FPV Camera Angle Tool
This simple tool will make measuring and setting your FPV camera angle a snap! Just align the end of the base legs with the camera axis, then align the bottom of the measurement arm with the same point on the axis. Use the cross hair feature on your FPV on-screen-display (OSD) to accurately measure the camera angle - the reading indicated by the cross hairs. You can adjust the camera angle while viewing the FPV feed to accurately position the FPV camera angle.
In this example, the indicated camera angle is 30 degrees. The line below each number indicates the written angle. 0 degrees is indicated at the bottom of the arm (no line)