Mainly metric, or not.

Sign for Catenary Arch  display, Science World, Vancouver

Science tends to be the domain of metric measurement.

Sign for Catenary Arch  display, Science World, Vancouver (Detail)

But even if not everyone who attends Science World is fully conversant with metric measurement, metric is generally the only measure on offer.

Unit of measure on sign for Catenary Arch  display, Science World, Vancouver

In this case the inside height of the "Catenary Arch" is listed as 7 feet, rather than its metric equivalent of 2.13 metres. 

Everything else I see at Science World uses metric measurement. Why this one aberration? Inconsistent and confusing for the public.