Introduced in the early 1950s, the automatic pinsetting machine is bowling's greatest invention. It liberated proprietors from unreliable pinboys and made bowling available around the clock, to anyone. Many machines are 50 or 60 years old, and the best-maintained ones work as well today as they did on day one.

The majority of pinsetters have been manufactured by the AMF and Brunswick corporations. This is a new project featuring these unlikely photographic subjects. Included are the Sherman duckpin pinsetter and the Brunswick B-10 semi-automatic, which depended halfway on a human operator.