Merlin McFly nitro engine compression testing gauge

This is the fully CNC machined ‘Compression Testing Tool’ from the Merlin McFly factory. Made from high quality Swiss 7075 alloy, the whole assembly is easily screwed into the glow plug hole of any glow engine with a turbo plug. Once you switch it on and turn the engine to the top dead centre you can read the compression of the engine on the digital readout. Ideal for nitro engine break in or tracking the life of your engine. Requires 1 x CR2032 battery (sold separately). Only works on engines that use a turbo glow plug.

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