This plate holder has an inner removable frame. To load the plates the inner frame is withdrawn, a hinge at the base allows the plates to be inserted, the inner frame together with the two draw-slides are returned to the outer metal frame. The draw slide is red on one side and black on the other, the red side is to indicate an exposed plate, exposure notes can also be written on the slide.

The patent refers to a slide made of metal, this example is made of wood but has the catch to the top of the slide shown in the patent.

Slides intended for use only with film are unusual. This example is much thinner than a conventional slide but the film could not have been held particularly flat. The film sold for use with the slide had a hardened bichromated gelatine base (Froedman's patent) which pre-dated the common use of nitro-cellulose.

The N&G slides of this type were available in 2 ½" x 3 ½" and 4.5 x 6 cm sizes for the Sibyl and Folding Reflex models. A number of minor variations exist:

• Brass frame, nickel draw-slide with catches to lock it in place.
• Brass frame, nickel draw-slide without catches.
• Aluminium frame, nickel draw-slide.
• Aluminium frame, aluminium draw-slide.