About nut slots:
There are a few different ways to measure nut slots. Generally, the larger the nut slot, the better the drivetrain quality and performance.
In some cases, a smaller nut slot can actually be more beneficial because it allows for more precise gear changes and less slippage.
One common way to measure nut slots is with a micrometer. This is a precision tool that can measure small distances with great accuracy.
Another common way to measure nut slots is with a gear gauge. This tool measures the width of a gear wheel and uses that information to calculate the size of the nut slot.