Before revision: 300px|Rowperfect Indoor Rower A Rowperfect is an indoor rowing machine designed in 1987; patented in 1988, by Cas Rekers.
After revision: 300px|Rowperfect Indoor Rower A Rowperfect is an indoor rowing machine designed in 1987; patented in 1988, by Casper (Cas) Rekers.