Sawyers produced several projectors for their View-Master reels. Only one of them gave a stereo image; the rest were extremely simple. Many of the projectors were designed to be used by children. Some non-stereo reels, with 14 individual pictures rather than seven stereo pairs, were made especially for use with the non-stereo projectors.
The first projector was introduced in about 1947. It has an f/3 lens, a built-in arrow pointer, and a window to permit the picture title to be read. The body is die-cast metal.
The S-1 was introduced in the early 1950s. It is a slightly changed (mainly styling changes) version of the original projector, and is a solidly-built projector. It was supplied with a Wollensack lens. A case was also available and the advertising for the projector makes it plain that the target market was not children, but anyone wanting to give a show e.g. in school.

View-Master advertising for the Junior Projector and Theatre
The Junior Projector was available in the 1950s. It is most commonly seen in black and grey, although there are also maroon and cream examples. It is made of plastic with some metal parts, and as the name implies, was aimed at children. It will project a picture up to sixteen inches wide and was described, in View Master publicity, as "easy for children to use."
The Custom 300 was designed to give pictures up to forty inches wide - suitable for small public halls. It takes a bright 300 w. lamp and has an f/3 lens.
The Deluxe 100 w. projector was cheaper than the Custom 300. It could project a picture up to thirty inches wide. This projector was a development of an earlier Deluxe projector, which was previously called the Standard, introduced in the 1950s.
The Standard 30 w. projector was intended for family use, giving a maximum picture size of eighteen inches.

View-Master advertising for the 411 Projector
The 411 and 511 projectors were introduced in the late 1960s.

View-Master advertising for the 511 (Diplomat) projector
The 511 is also called the Diplomat. The two projectors are very similar. They both have a 55 mm. f/3 lens and black plastic casing. The 411 takes a 100 w. lamp whereas the 511 takes a 12 v. 50 w. halogen lamp which gives increased brightness. There was also a 111 which took a 50 w. lamp, and which was equipped with an f/3 75 mm. lens.
The Entertainer is a simple plastic projector designed to be easy to use. It was made towards the end of the 1960s and into the 1970s. One selling point which the American advertising of the time mentioned was that the lamp was readily from "automotive suppliers."

View-Master advertising for the Stereo-Matic 500 projector
The top of the range View-Master projector is the Stereomatic 500 which, as its name implies, gives stereo projection of View-Master reels. It is used in conjunction with a silver screen and special glasses; the stereo effect is amazing. It was introduced in 1953 and remained available for some years; however, it was very expensive when new and is not easy to find now.
A talking View-Master projector was made but this does not seem to have been imported into the UK. There was also a back-projection unit which functions like a slide viewer. This was introduced in the 1970s but does not appear to have been sold in the UK.

A non-stereo projector from Tyco aimed at children