This miniature hit-n-miss engine is remarkably tiny and was featured in the book, The Shop Wisdom of Phillip Duclos on page 108. The engine is only 4”-long and has a 1”-diameter cylinder bore. The flywheel is 2-1/2” in diameter. Mr. Duclos did not claim it was the world’s smallest hit-n-miss engine, but it was the smallest that he had seen run.
