NESIT is centrally located in Meriden, CT directly off of I-691 from either East or West bound lanes.
In either direction take Exit 8.
West bound take a left at the end of the exit (at the bottom of the hill) then a right at the next light.
East bound continue straight from the exit. The exit itself goes in a near full circle.
The historic 290 Pratt Street building is hard to miss. It’s the huge factory building on the right. Park in the first parking lot near the loading bays and proceed to the side entrance next to the small-truck loading dock. There should be signs from there.
And if your the sort who appreciates a map here’s one from Google. In the street view you can (currently, as long as they don’t change it) see the doorway next to the loading docks past the cars.