You can just use millimeters as your unit of length and stick to whole numbers.Ĭlick to expand.Are we making this too difficult? Or is it because I'm an engineer and I work with numbers all the time? So the fractional measurement that is approximately 6.784 inches is 6 13/16 inches. That is the closest fractional inch measurement to the decimal measurement of 6.784 inches.īut I need INCHES AND 16th's of an INCH! Help! 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).ġ08.544 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.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |