United States dollar or ""bill"" (e.g. ""two bills"" being $200). The $50 note is occasionally called a ""yardstick"" or a ""grant"" (after President Ulysses S. Grant, pictured on the obverse). The $20 note is referred to as a ""double sawbuck"", ""Jackson"" (after Andrew Jackson), or "double eagle". The $10 note is referred to as a ""sawbuck"", ""ten-spot"" or ""Hamilton"" (after Alexander Hamilton). The $5 note as ""Lincoln"", ""fin"", ""fiver"" or ""five-spot"". The infrequently-used $2 note is sometimes called ""deuce"", ""Tom"", or ""Jefferson"" (after Thomas Jefferson). The $1 note as a ""single"" or ""buck"". The dollar has also been referred to as a ""bone""
Banknote counter ultraviolet properties of the bills and the magnetic ink at the same time it is counting the currency. Most counters will stop and alert the user when a counterfeit banknote is detected. Banknote counter A banknote counter (or bill counter) is a device designed primarily to accurately count a quantity of banknotes. Additionally, a banknote counter may sort banknotes into batches and check for damaged or counterfeit notes. The first automatic bill counting machines (or money counting machines) were introduced in the 1920s in the United States and were produced by the Federal Bill Counter Company of Washington, D.C. These