|MM||CM||Approximate Fractional Inches|
|18 mm||1.8 cm||Just short of 3/4 Inch|
|19 mm||1.9 cm||Little under 3/4 Inch|
|20 mm||2.0 cm||Just short of 13/16 Inch|
|21 mm||2.1 cm||Little over 13/16 Inch|
For example, if your ruler measures to the nearest 1/32nd of an inch, multiply the decimal portion by 32. In this example, . 456 times 32 equals 14.592.
Since there are 25.4 millimeters in one inch, the length in inches is equal to millimeters divided by 25.4. Thus, the formula to convert millimeters to inches is the length divided by 25.4.
Did you know? 2 inches is equal to 5.08 centimeters or 50.8 millimeters.
|inch/64||Fractional inch||Decimal inch|
|Millimeters (mm)||Inches (“) (decimal)||Inches (“) (fraction)|
|2 mm||0.0787 ″||5/64 ″|
|3 mm||0.1181 ″||1/8 ″|
|4 mm||0.1575 ″||5/32 ″|
|5 mm||0.1969 ″||13/64 ″|
|Inch||Decimal of a Foot|
One inch (2.5 cm) is roughly the measurement from the top knuckle on your thumb to your thumb tip. Measure yours to see how close it is to 1 inch.
|Centimeters (cm)||Inches (“) (decimal)||Inches (“) (fraction)|
|1 cm||0.3937 in||25/64 in|
|2 cm||0.7874 in||25/32 in|
|3 cm||1.1811 in||1 3/16 in|
|4 cm||1.5748 in||1 37/64 in|
|MM||Approximate Size In Inches||Exact Size In Inches|
|2mm||1/16 Inch||0.07874 Inches|
|3mm||3/32 Inch||0.11811 Inches|
|4mm||1/8 Inch||0.15748 Inches|
|5mm||3/16 Inch||0.19685 Inches|
If you have a metric tape measure, the numbers should be read like this: The large, numbered markings are centimeters. There is a smaller marking exactly halfway between the centimeters for ease of reading. The smallest markings are millimeters, or one tenth of a centimeter.
A unit of length in the metric system equal to 0.001 meter. A unit of length equal to one thousandth (10−3 ) of a meter, or 0.0394 inch. … 039 inches is an example of a millimeter.
The length between your thumb tip and the top knuckle of your thumb is roughly one inch. The next time you have a ruler handy, give it a quick measure to double-check.
A ruler is 12 inches long, with inch lines along the edge of the ruler (1 is at the far left and 12 is at the far right, with every number in between in numerical order). The lines at the inch numbers are the longest lines along the edge of the ruler.
It is important to measure objects using the measurement lines on the ruler. We always start from the ‘0’ line on the ruler and we line our objects up with this point. A common mistake when learning to measure objects with a ruler is to not line up the object with the zero correctly.
Standard tape measures usually go from 15 to 50 feet. Long tape measures come in greater lengths of 100 feet or more. They are often made of flat steel or fiberglass and retract with a hand crank.
|Inches (“)||Millimeters (mm)|
|1/2 ″||12.7 mm|
|1 ″||25.4 mm|
|2 ″||50.8 mm|
|3 ″||76.2 mm|
Answer: 1.3 as a fraction is 13/10.
Let’s evaluate the expression. Explanation: In order to find out 1.3 as a fraction, we multiply and divide 1.3 by 10.
|Bullet diameter||12.98 mm (0.511 in)|
|Neck diameter||13.95 mm (0.549 in)|
|Shoulder diameter||18.90 mm (0.744 in)|
|Base diameter||21.75 mm (0.856 in)|
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