Alert PET reader John Greco in Old Forge, Pa. spotted the almost-forgotten McCulloch BP-1 chain saw in the photo on p. 48 of the PET November PowerGuide issue and sent a note thanking us for running it. Greco, who sold McCulloch for Eastern States Distributors and as a factory rep back in the day, noted that the saw had a second “balancing piston” below the main piston that greatly reduced vibration.

The photo came from the big box of old Chain Saw Age (forerunner to PET) archives, which includes some classic material.