This product is a successor to its predecessor, a combustion analysis instrument, and is a system that can contribute to the measurement of various rotating bodies. Combustion analysis is a method for evaluating the performance of engines that have a mechanism that generates power through the reciprocating motion of a piston, mainly known as a reciprocating engine. By understanding the combustion state of the engine through combustion analysis, it is possible to make improvements. It is used in a wide range of fields, including automobiles, motorcycles, agricultural machinery, construction machinery, power generation equipment, and ships.