Advertising slides like this one would have screened in the cinema near the end of intermission- just as patrons were taking their seats for the second half of the movie (when intermissions were phased out they sometimes shown before the film commenced). 

These ads were printed/painted on glass and were loaded into the projector for a few moments before the heat from the lamp cracked the glass. Some of these slides were detailed and used prints, photographs and visual humour. Others, like this one from A.M Fox, were basic. Given how briefly each slide was shown to the audience, oftentimes simple was best!

No information can be found online about this business- but based off the design of the slide it would have been made from the 1940s-early 1960s. New Zealanders bought 40 million cinema tickets a year by the late 1950s so this was a prime time to advertise. 

In the middle of the 20th century the high streets of small town New Zealand were full of specialized businesses and crafts which today are only found in the main centres. Take D.A. Blackburn- a repairer of watches located on Foxton's Main Street. 

Before the arrival of cheaper watches which are easier to replace than repair, there were many such craftspeople in business. However- maybe Blackburn was too specialized for a town of Foxton's size. Kete records show him in business in 1960 but not in 1955 or 1965, so his shop didn't last as long as many others who took out cinema advertising in Foxton.

Blackburn also sold watches and clocks- all tested and guaranteed!