This listing is for a Rapidesign Electrical/Electronic 3 piece template set. This is the most comprehensive set of electrical/electronic templates, taken from ANSI Y32.2 symbols, grouped into sections for easy use, and are in correct relative size so any grid can be obtained through photographic reduction. This complete set provides nearly all the electrical and electronic symbols used. Use with a fine point mechanical pencil, fineline markers or technical pens. Berol template numbers: R-301, R-302, R-303 Actual size (overall): 8″ x 5″, 8″ x 4-3/8″, 8″ x 3-3/4″. Thickness: 030″. Has printed centering lines. Precision milled. Made in USA.