Heli-Max HMXR4854 - Manual (Page 4)

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OPERATION OPERATION
For the most accurate pitch reading, the Heli-Max Digital Pitch
Gauge should be reset so it is perpendicular to your helicopter’s
mainshaft. The end of the motor on an electric model, or a flat top/
bottom section of the side frames should be good surfaces to use.
Place the gauge on the area selected and press the ZERO button
to put the gauge in REL mode. When you measure the pitch of the
rotor blades, position the blades so the gauge is facing the same
direction it was when the ZERO button was pressed
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