The Ames Lettering Instrument is one of the most useful and versatile lettering devices on the market today. It is inexpensive and simple to operate, widely used in schools and in industry, and is the only instrument that provides:Three different systems of letters. Most widely used by commercial draftsmen.
For drawing the two slope lines usually used for notes on drawings. Namely 1/16" to 1-1/2" in height.
For cross-sectioning, drawing brick, siding shingles, etc.