Abstract: A power transfer switch is used between a watt-hour meter and a meter box. The meter box has main power contacts which are connected to a main power source and customer-side contacts which are connected to at least one load. The power transfer switch includes a base with first contacts for connection to the main power contacts of the meter box and second contacts for connection to the customer-side contacts of the meter box. The base has further contacts for connection with the watt-hour meter and contacts for connection with a standby power source. The power transfer switch also includes a rotary switch. The rotary switch has a first position in which the main power contacts are connected to the customer-side contacts and a second position in which the standby power source is connected to the customer-side contacts.

Abstract: A film cutter which includes a supporting frame structure with a translucent supply side platform mounted thereon and adapted to be illuminated by an underlying light source and including a film cutter mounted on the frame structure.

Abstract: A protective container for transparent slides which includes one or more informational strips on the outside thereof to identify the information carried or illustrated by the slide.

Abstract: The present invention includes an information projector slide comprising a planar member having a central window for holding a photographic film image and at least one border adjacent the window. A magnetic medium for storing selected digitally encoded alpha-numeric information is affixed to the border. A read/write system for reading information from and writing information to the projector slide includes a read head, a write head, a controller, a keyboard and a display monitor. An optical projection system and a video projection system are provided for concurrently displaying an image from a photographic slide and encoded information from the magnetic media. A cropping system is also provided for use with the video projection system.