Well, when you do line work, your gap on the spring should be the thickness of a dime. And for shading, the thickness of a nickel. Of course, everyone does it different, but this is just for beginning.
-The udometer is a machine. It is a rain gauge.
They have a spring attached to a dial or needle pointing at the weight on a gauge. Both spring and gauge are highly calibrated.
20 gauge is really little. 16 is a little bit bigger then a large safety pin. If you wanna make sure ask a tattoo artist or body piercer.
Take it to a gun smith.
· udometer - a rain gauge
with the use of shearing machine
it helps in laying out the work accurately
Best left to a gunsmith.
Try e-gunparts.com
Try e-gunparts.com
You need to take it to a competent gunmsith
With a Valve Spring Height Micrometer ----------------------------------------------------------------- If you don't have one of these tools you can also use what is called a snap gauge. Snap gauges are spring loaded and you can use it to measure the distance from the spring pad to the bottom of the retainer. Then you can measure the end to end distance of the snap gauge with either a dial caliper or a micrometer. Not as fast as the first solution but it is all we had for many years.