The clock weighs 1.75 tonnes and took 800 hours to build, with the 5.2 metre tall structure now set to greet visitors to the airport.

Construction of the clock was overseen by Longines, who became the first International Tier One partner of the Games back in February.

Longines are a long-term supporter of the Commonwealth Games who also delivered timing services for Perth 1962 as well as acting as a sponsor of the most recent edition in Glasgow.

Gold Coast 2018 chairman Peter Beattie and Commonwealth Games Minister Kate Jones were present at the unveiling of the clock, with 175 days to go, along with Longines General Manager Australia, Amelia Michael.

The clock was revealed by Gold Coast 2018 ambassador and swimmer Cameron McEvoy, as well as high jumper Amy Pejkovic, a Longines Friend of the Brand and Commonwealth Games hopeful.

The event also featured children from the local St Pius’ Primary School, as well as Gold Coast 2018 mascot Borobi.

“It is certainly going to have a massive impression on everyone who comes through Brisbane Airport,” said Jones.

“We know that hundreds of thousands of people will be coming through this airport between now and the Commonwealth Games.

“It should be a great reminder and we are excited about this great opportunity the next generation of Queenslanders with have in 2018.”

As "official timekeeper", the Longines will be responsible for delivering "precise timing, scoring and results for all competitions".

Over 200 Longines technicians will be working across all 18 competition venues at Games time, delivering timing, scoring and results equipment and services.

The company have also been supporting the Gold Coast 2018 Queen’s Baton Relay from its launch in London earlier this year, with their branding being showcased on uniforms.

“The partnership with Longines is essential,” said Beattie.

“Not only are they an international brand with an incredible reputation, you can imagine how important it is for the Games to have delivery of timing, scoring and results that are absolutely accurate.

“Most important thing is to get the timing right and Longines will do that.

“I look forward to the record that will be broken at the Games and it will be Longines that records them.

The Baton is due to arrive at Brisbane Airport on Christmas Eve, before commencing a 100-day tour of Australia before the Games’ Opening Ceremony on April 4.

During the Commonwealth Games, Brisbane Airport is expected to handle 20,000 pieces of athletes' luggage, more than 500 bike travel cases, 60 pole vaults and 45 javelins.

Around 300 Para-athletes are expected to arrive and depart from Brisbane Airport also.”

Countdown clocks are also located at Surfers Paradise in Gold Coast, as well as in host towns of Carins and Townsville, which will welcome basketball preliminary competition.