100 microns is 3937 millionths of an inch
39 millionths of an inch
millionths of what, if inch then 2.54 microns if metre then 100 microns
.000050
The answer depends on 0.512 WHAT! You will get different fractions of an inch from 0.512 miles and 0.512 microns.
0.6666667 ten millionths or 6666667 over 10,000,000
0.000 002 inch(es).
Fractions can't be expressed as integers which are whole numbers
It is 4/125 of an inch
They denote different fractions of the inch. A good engineers ruler will have 64 ths, 32 nds 16 ths and 8 ths at least.
1 inch is exactly 2.54 cm 2.54 cm = 1 in. In July 1959, the yard was redefined to be exactly 0.9144 meters which meant the the inch became 25.4 cm. Prior to that time, the American inch and UK inch were about 3.7 millionths of an inch different from each other. The new standard is approximately mid way between the old UK and US inch.
A hundredth of a pound = 1 penny, is used in routine transactions. Smaller fractions are not normally used but in currency transactions, millionths of a pound may be used in setting rates.