That's how much the average fingernail grows in nine days.
A millimeter is 1/10 as long as a centimeter.
A speck of dust is about as long as 1 millimeter; a speck of dust can be found in all houses.
A millimeter is only 1/10 of a centimeter, 1/304.8 of a foot, 1/25.4 of an inch, 1/914.4 of a yard, and 1/1000 of a meter. A millimeter is about as small as a mustard seed.
flys are a millimeter long
1 inch is 25.4 millimeters.
A pinhead is about 1 mm across.
1 inches = 25.4 millimeters
1 millimeter
A mustard seed
a millimeter
a millimeter is the length of a millimeter
1 millimeter is larger than 0.1 (1/10th) millimeter.