This product is a system that, while being a successor to the previous combustion analysis equipment, can contribute to the measurement of various rotating bodies. Combustion analysis is a method for evaluating the performance of engines that have a mechanism generating power through the reciprocating motion of pistons, commonly known as reciprocating engines. Through combustion analysis, it is possible to understand the combustion state of the engine and lead to improvements. It is active in a wide range of fields, including automobiles, motorcycles, agricultural machinery, construction equipment, power generation equipment, and ships.