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
City of Glasgow Police from these modest beginnings that the Glasgow Police embarked on more than 200 years of service to the City. In 1819 Lieutenant Peter McKinlay was appointed as Criminal Officer, Glasgow's first Detective. In 1846 the Glasgow Police merged with the Gorbals, Calton and Anderston Burgh Police. As a result of this, Glasgow Police divided into four Divisions and now numbered 360 officers. New uniforms were issued in 1849, which consisted of a better quality top hat, three-quarter length dress coats with standing collar and nine buttons. Electric telegraph adopted for communication between offices and other police forces in 1861 and