The UK’s most iconic horserace was moved from its traditional home of Aintree to what is now Gatwick Airport during the First World War.
To mark the centenary, the same scales used to weigh jockeys ahead of Saturday’s race have been installed at the airport’s South Terminal.
Passengers will be able to use them to ensure their bags are below the maximum weight before checking in.
Guy Stephenson, the airport’s Chief Commercial Officer, said: “We wanted to mark the centenary of the Grand National being hosted at Gatwick Racecourse by bringing a little piece of the race day experience to the airport.
“The jockey weigh in is a big part of horse racing, like weighing your baggage is an important aspect of any journey through an airport so we have combined the two in celebration of this historic event.”
The Grand National was renamed The War Steeplechase while it was hosted at Gatwick from 1916-1918. It was run over the same distance as Aintree, four miles and 856 yards.
Gatwick racecourse hosted its last race in March 1940.