What does that mean? It means that 6.784 inches is about 109 16th's of an inch. Put the rounded number over the fractional unit denominator, like so: 109/16. Multiply the length, in decimal form, times the denominator of the fractional unit (16 in this case).ฤก08.544 what? 108.544 sixteenths of an inch. Is it 1/8's of an inch? 1/16's of an inch? 1/32's of an inch? I cannot really distinguish anything less than 1/16" with my old eyeballs, so I will use 1/16's of an inch. Now, decide what fractional units you want to use as the maximum precision for the fractional units. What is it? In our example, it was 6.784 inches. OK, but assuming I can't find the ruler shown above, how do I get a quick approximation of a length specified in decimal inches in fractional inches? Arithmetic. (Rats, I just found it! I guess I don't need to do this conversion after all.) I have one somewhere, but I can never lay my hands on it when I need it.) (Note: There ARE rulers that are marked in DECIMAL inches. So, I have a length in decimal inches but I need it in fractional inches: 1/4 inch, 1/8 inch, 1/16th inch, 1/32, inch, 1/64 inch, et cetera, so I can actually measure that distance with the ruler that is marked in fractional inches. But it spits it out in DECIMAL inches: 6.784 inches, for example, rather than the fractional inches, in powers of 2, that most rulers are marked in. So I run a calculation that spits out a length in inches. I am more familiar with length measured in inches rather than in centimeters or millimeters. I use on-line calculators (and handheld calculators) a lot when making low power model rockets.
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