Ignition Timing kit by RCEXL
Plugs into hall sensor (not supplied), and with supplied timing wheel allows you to accurately adjust timing with visual and audio indication.
Should work with many other brands of ignition that use the same similar hall sensor wiring.
When the sensor is triggered by the hub magent, the module will beep, and the LED is lit.
Can also be used to test hall sensors, and check for correct sensor magnet orientation.
Requires 2 x CR2032 Batteries (not included)
The instructions for the RCEXL Ignitions also provide some information and how to set timing (Available HERE)