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Take out a ruler with English and metric units. Draw one inch on a piece of paper with a pen. Now turn to the other side of the ruler and read how long your line is. It should be around 2.5 cm. If you were able to refine your measurement (say with a vernier caliper) you would see that your line would be 2.54 cm (or 25.4 mm).

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Q: Why does an inch equal 25.4 mm?

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1 in = 25.4 mm 10 in = 254 mm

254

1 inch is equal to 2.54 centimeters or 254 mm so 223mm would be 0.88 inches

1 cm equals 10 mm there for 254 cm equal 2,540 mm

1 inch is 25.4 mm 7.5 mm = 7.5/25.4 = 75/254 inch

There are 2.54 centimetres in one inch. Therefore, 254 centimetres is equal to 254 / 2.54 = 100 inches.

One inch is equal to 25.4 mm

1524mm 1 inch = 254 mm

1 inch = 254 mm 22 inch = 22 x 254 mm Direct Conversion Formula 22 in* 25.4 mm 1 in = 558.8 mm

25.4 mm per inch.

There are .254 decimeters in 1 inch.

24.5 mm is equal to 2.45 cm. One inch is equal to 2.45 cm. Therefore, 24.5 mm is equal to one inch.

One inch is equal to 25.4 mm.

457.2 mm

12.7 mm

1 inch = 25.4 mm So 5 mm/1 inch = 5 mm/25.4 mm = 5/25.4 = 50/254 which can be simplified if you wish.

Note : 1 inch = 25.4 mm

There are 25.4 millimetres in one inch. Therefore, 254 millimetres is equal to 254/25.4 = 10 inches.

1 inch = 25.4 mm 17.4 mm = 0.68504 inch (rounded)

Three thousandths of an inch (0.003") is exactly 0.0762 mm

Five thousandths (0.005) of an inch is exactly 0.127 mm

1/60000 inch = 0.000423333 mm

1 inch = 25.4 mm.

One inch is equal to about 25.4 mm

Half inch is equal to 12.7mm