Product Manual

ALT ZERO (Setting an alternate reference point)

ALT ZERO allows you to set any angle as a 0.00° reference point from which to take

measurements.

To set an alternate reference point, place the Pro 3600 on the new surface and wait 5 seconds.

Press the ALT ZERO button once. "Alt "will appear on the display, followed by "-0-". The

Pro 3600 will then display angles using the new reference. ALT ZERO will appear in the

lower right hand corner of the display as long as the Pro 3600 is in ALT ZERO mode.

Press ALT ZERO again to return to standard reference mode. The Pro 3600 also returns to

standard reference when it is turned off or shuts off automatically.

NOTE: You cannot activate the ALT ZERO button when the Pro 3600 display is in HOLD.