This is a box for a 3-D Dimension Viewer made by View-Master. This is a device for viewing 3-D images on a paper disk. It was originally marketed as a way for viewers to enjoy stereograms of tourist attractions.
“Carry On Collecting” is a project set up by the Museum of Hartlepool to collect objects which represent everyday life in the town and beyond, from the 1950s through to the present day. The collection also attempts to represent the diversity of the people of Hartlepool over the past 60 years
Owner: Museum of Hartlepool
Source: Flickr Commons