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Micro- (symbol µ) is a unit prefix in the metric system denoting a factor of 10−6 (one millionth). Confirmed in 1960, the prefix comes from the Greek μικρός (mikrós), meaning "small".
The symbol for the prefix comes from the Greek letter μ (mu). It is the only SI prefix which uses a character not from the Latin alphabet. "mc" is commonly used as a prefix when the character "µ" is not available; for example, "mcg" commonly denotes a microgram. Also the letter u instead of µ is allowed by one of the ISO documents.
Typical bacteria are 1 to 10 micrometres in diameter.
Eukaryotic cells are typically 10 to 100 micrometres in diameter.

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  1. Helocat

    Build Thread  CZ Scorpion Micro built from reg. pistol

    Did a home brew build of my own CZ Scorpion Micro. Everything but the goofy little fake Supressor. I picked up a regular CZ Scorpion pistol used from NW Amory this last yr. in getting something else and noticed it in the used case. $650 killer deal, done. It’s a Gen 2 but clearly in great...
  2. SIG34


    What part of Washington are you in?:D

    WTS WA  SOE M4 Micro Rig with Extras

    Perfect condition Special Operations Equipment M4 micro Rig with H-Harness. Also included is SOE hydration bladder carrier SOE medical insert SOE shotgun card Chest rig will hold 4 M4 mags or AK mags. All Velcro is in perfect and clean condition. Value is over $300 and you will have to...
  4. X

    WTB WA  KAC micro front

    Need a Knight’s Armament micro front sight. Let me know if you’ve got one!
  5. Nosferatu

    WTS WA  Griffin Armament Micro Modular Sights

    Brand new in package, Griffin Armament Micro Modular Backup Iron Sights. Product page from Griffin Armament: M2 Sight Kit I received these as a promotion from GA with the purchase of a suppressor, but I don't need them. They are brand new in the package and have never been installed on...