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you have three turns each
You just flip the numbers of the fraction.....such as 1/7 turns into 7/1...
Wrapping a number of coils of insulated wire around an iron nail, and a passing a current from a battery through it, turns the iron nail in to an electro-magnet. While the current flows, the nail will attract metal objects. It is a standard demonstaration in science classes in schools. The more turns the stronger the attraction.
For metric, use mm - For English, use Inches English Example: [ 1inch / (thickness of nut) ] x (number of turns for the bolt to get through the nut ) typical numbers are 18, 24, and 32. Metric: (thickness of nut in mm) / (number of turns for the bolt to get through the nut) typical numbers are 1, 1.25, 1.5, and 2.
When the angle you are measuring is obviously an obtuse angle (angle above 90 degrees, or when you draw a box in the angle and it turns out bigger than it's supposed to) you use the big numbers. When the angle is obviously acute (opposite definition of obtuse), you use the little numbers.