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The millimetre (SI symbol: mm) is a unit of length in the metric system equal to 10 −3 metres ( 1 / 1 000 m = 0.001 m). To help compare different orders of magnitude , this section lists lengths between 10 −3 m and 10 −2 m (1 mm and 1 cm).
a very fine grain of sand (0.063 mm diameter, 3 micrograms) 1 × 10 −12: One nanolitre 6.2 × 10 −11: A medium grain of sand (0.5 mm diameter, 1.5 milligrams) 5 × 10 −10: Volume of a poppy seed of 1-millimetre diameter [1] 1 × 10 −9: One cubic millimetre or one microlitre: 4 × 10 −9: Volume of a mustard seed of 2-millimetre ...
A thousandth of an inch is a derived unit of length in a system of units using inches.Equal to 1 ⁄ 1000 of an inch, a thousandth is commonly called a thou / ˈ θ aʊ / (used for both singular and plural) or, particularly in North America, a mil (plural mils).
Watt called his instrument a micrometer, a term now used with a different meaning in engineering (the micrometer screw gauge). It consisted of two parallel hairs in the focal plane of a telescope eyepiece crossing an upright hair. At the point to be measured, two sliding targets on a surveyor's rod were adjusted to align with the hairs in the ...
Mendocino County (/ ˌ m ɛ n d ə ˈ s iː n oʊ / ⓘ; Mendocino, Spanish for "of Mendoza") [6] is a county located on the North Coast of the U.S. state of California. As of the 2020 census , the population was 91,601. [ 7 ]
Brochure for Los Angeles, c. 1930. Los Angeles County is one of the original counties of California, created at the time of statehood in 1850. [8] The county originally included parts of what are now Kern, San Bernardino, Riverside, Inyo, Tulare, Ventura, and Orange counties.
Alameda County (/ ˌ æ l ə ˈ m iː d ə / ⓘ AL-ə-MEE-də) is a county located in the U.S. state of California.As of the 2020 census, the population was 1,682,353, [4] [6] making it the 7th-most populous county in the state [7] and 21st most populous nationally.
Napa County (/ ˈ n æ p ə / ⓘ) is a county north of San Pablo Bay located in the northern portion of the U.S. state of California. As of the 2020 census, the population was 138,019. [7] The county seat is the City of Napa. [8] Napa County was one of the original counties of California, [9] created in 1850 at the time of