"Last year we were invited by Trafalgar Square management to set up in the centre of the square. This year we were invited to come back to set up in this shop, since it had become vacant," Mr Ramage said.
"It's a drawcard for Trafalgar Square, and it's a nice outing for us."
The displays were all made by members of the three clubs, and include a replica of the Eiffel Tower, ships, cars, machines that can draw or knit, and even voice-guided robots.
Club member Tom Pittams said Meccano was invented by Frank Hornby in Liverpool, Britain, in 1901. It was marketed as "mechanics made easy" and it's that simplicity that appeals.
"You can use it to make whatever you want. You can even invent things," Mr Pittams said.
"It's not just for children - it's for adults too."
Carole Anderson said she had brought her 6-year-old grandson, James, to see the displays after seeing it earlier in the week while shopping.
"I remember my brother having a set when we were kids," Mrs Anderson said.
"James has always liked Lego, but I think we might have to get him a Meccano set now."
James had one word for the Meccano: "Cool."
Mr Pittams said anyone was welcome to come along to the Wanganui Meccano Club's meetings, on the second Saturday of every month at St Luke's Church hall in Manuka St, from 1pm.
As for the Meccano display, that's open 10am-3pm every day until Saturday.