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 Many serving police officers joined the Armed Forces. In 1942 Chief Constable Sillitoe was knighted and resigned in 1943 to take command of the Kent Constabulary. In 1975, the City of Glasgow Police, Lanarkshire Constabulary, Renfrew and Bute Constabulary, Dunbartonshire Constabulary, Argyll County Police, Ayrshire Constabulary and a small portion of Stirling and Clackmannan Police, were amalgamated to create Strathclyde Police. In 2013 Police Scotland (Scottish Gaelic: Poileas Alba; Scots: Polis Scotland) – legally named the Police Service of Scotland[3] – the national police force of Scotland - was formed with the merger of the eight regional police forces in