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Spring makers posses a vast amount of knowledge. In this section they can share that knowledge with their fellow spring makers around the world. We encourage all great spring makers to post a few trade secrets in a specific category. Each spring maker that posts a secret of the trade will get full credit for their submission and their trade secret will be posted for everyone to see. Enjoy!
"Spring makers unite and collaborate with each other for the better good of the Spring world !!"
HOW TO MEASURE WITH A MICROMETER
With a Micrometer you are able to find out the wire diameter of the wire by simply making sure the thimble is at 0 aligned with the 0 on the vernier scale. Then you move the thimble down, with your thumb and place the wire in the measuring surface and roll the thimble up to tighten the spindle on the wire to get your wire diameter.
Micrometers use readings from the sleeve. Each numbered marking is divided into 4 parts, each equaling .025" (25/1000). Therefore, each numbered marking equals .1" (1/10).
For example: (.025 x 4 = .100") (.025 x 8 = .200")
The thimble, which turns, has 25 positions. Each of these markings equals .001" (1/1000). If the sleeve does not fall on an exact .1 section, the dimension will be the lowest complete tenth plus the reading on the thimble.
Example: Sleeve scale mark is between the .2(2/10) and .3(3/10), and the thimble reads 16, or 16 x .001" = .016 (16/1000). Adding the two readings together equals: Sleeve line = .200+ Thimble line = .016
Micrometers use readings from the sleeve. Each numbered marking is divided into 4 parts, each equaling .025" (25/1000). Therefore, each numbered marking equals .1" (1/10).
For example: (.025 x 4 = .100") (.025 x 8 = .200")
The thimble, which turns, has 25 positions. Each of these markings equals .001" (1/1000). If the sleeve does not fall on an exact .1 section, the dimension will be the lowest complete tenth plus the reading on the thimble.
Example: Sleeve scale mark is between the .2(2/10) and .3(3/10), and the thimble reads 16, or 16 x .001" = .016 (16/1000). Adding the two readings together equals: Sleeve line = .200+ Thimble line = .016
Total Thickness = .216"