To determine the size catapults kinetic energy of toys, the ejection of parts of the test apparatus through the tube or external testing of the components of the two sensors detect the ejection toy parts used away after a certain period of time, it has calculated the move Energy. The main instruments used for this test launch of baby toys or childrens safety.Clock out：1 MHzDisplay：7 digitDisplay rang ：0.000001 to 9.999999 secProjectile size ：Large then 2mm diameterSmall then 35mm diameter ( for internal sensor )Sensors distance：Fixed 150mm ( internal sensor )Adjustable ：40mm - 400mm ( external sensor)Dimensions：240mm×310mm×130mm.Weight：16kgStandards：16 CFR 1500    ASTM F963 4.8EN-71                ISO 8124