A combination lock is a type of padlock in which a sequence (permutation) of numbers or symbols is used to open the lock. The sequence may be entered using a single rotating dial which interacts with several discs or cams, by using a set of several rotating discs with inscribed numerals which directly interact with the locking mechanism, or through an electronic or mechanical keypad. Types range from inexpensive three-digit luggage locks to high-security safes. Unlike a regular padlock, combination locks don't use keys
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Famous quotes containing the words combination and/or lock:
“The English language may hold a more disagreeable combination of words than “The doctor will see you now.” I am willing to concede something to the phrase “Have you anything to say before the current is turned on?””
—Robert Benchley (1889–1945)
“There warn’t anybody at the church, except maybe a hog or two, for there warn’t any lock on the door, and hogs likes a puncheon floor in summertime because it’s cool. If you notice, most folks don’t go to church only when they’ve got to; but a hog is different.”
—Mark Twain [Samuel Langhorne Clemens] (1835–1910)