If you are talking about a small engine such as a lawn mower, the air gap between the coil and the flywheel is usually is .015 to .020 of an inch. A piece of cardboard from a cereal box can be used as a gauge if you don't have the proper gauges.
0010-0.014" and a normal business card serves as an easy to find gauge.
you can go to any parts store and buy a feeler gauge for a couple of dollars. use that to set the air gap between the coil and the flywheel. use the oem specs
First, you have to specify what cities you want to find the distance between, and then you can find the distance between each one, and finally add all the distance together, to give you the total.
flywheel settings
find the distance between the Dubai cities
flywheel between block and trans, your starter turns it.
how do you find distance between points
The distance between the countries can be find by travelling
ruler
The perpendicular distance is the shortest.
You can get distance and hours and directions from Mapquest.com
You know that each 'wrap' or turn of wire in the coil has to go all the way around the coil-form, and you know how to calculate the distance around a circle. So all you have to do is count the number of times the wire goes around the coil, measure the coil's diameter, calculate its circumference, and multiply that by the number of turns in the coil.