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General Mach Discussion / Re: mach's rounding of measurements?
« on: April 22, 2010, 04:54:07 AM »
To put it another way, with your figures above your steps per unit would be 4000/9.75= 410.256410256410256410256410245 etc
now divide 1 inch by that number and you get 0.0024375000000018281250000013710939 per step
Now instead if you enter to 8 decimal places it would be 410.25641026 so 1 divided by that is 0.002437499999978618750001866210937 per step
Difference between the two would be 0.00000000000002315624999981474990625163293457
So for example if you moved a distance of 100 inches the rounded to 8 decimals would theoretically be out by 0.000000000950000000000714296153846646 inches
I dont think you need to worry about that, there is probably 1000 x more error in a tooth of your gear.
Hope my calcs are right
Hood
now divide 1 inch by that number and you get 0.0024375000000018281250000013710939 per step
Now instead if you enter to 8 decimal places it would be 410.25641026 so 1 divided by that is 0.002437499999978618750001866210937 per step
Difference between the two would be 0.00000000000002315624999981474990625163293457
So for example if you moved a distance of 100 inches the rounded to 8 decimals would theoretically be out by 0.000000000950000000000714296153846646 inches
I dont think you need to worry about that, there is probably 1000 x more error in a tooth of your gear.
Hope my calcs are right
Hood