PARTS ONLY: The following is a description of what it is capable of if the pointer is fixed and if everything else is okay, which I do not know enough about it. ::::  This tool was specifically designed for airplane engines and can be used with RC engines. Crafted in the United States, the Time-Rite Piston Position Indicator is a must-have for serious hobbyists who want to take their RC models to the next level. With its accuracy and compatibility with scales such as 1:1, 1:5, 1:6, and 1:8, the Time-Rite Piston Position Indicator is an essential tool for anyone looking to tune up their vintage airplane engine. It is perfect for use in vintage airplane engines or applicable RC engines. Check your engine's compatibility before ordering. If nothing else, it is a really cool decorator piece and conversation starter.