Check (pattern) a board used for playing checkers and chess, and in heraldry. The check pattern has a number of symbolic meanings. In auto racing, the chequered flag is displayed at the finishing line to signal that the race has finished. It originates from the "checkers" who watched the finishing line and checked when cars had finished the race. They began using chequered flags to identify themselves. In some countries, the check pattern has become a symbol of the police. Known as "Sillitoe Tartan", it was first used in Glasgow in the 1930s and was inspired by a pattern worn by some
Chief of police police forces and the 3 special police forces holds the rank of Chief Constable. The exceptions are the Metropolitan Police Service and City of London Police, where the chief police officer instead holds the rank of Commissioner. The umbrella term for the chief constables and commissioners is chief police officer. The term "chief officer", by contrast, includes the chief police officers and their deputies and assistants. The National Police Chiefs Council is the association for chief officers. The rank of Commissioner should not be confused with the Police and Crime Commissioners. They are elected officials who oversee a police force