Aristo's custom-made, dimensionally stable precision lettering templates are made from contrast-enhancing orange-transparent plastic. They feature sharp-edged letters, numbers, punctuation marks, and symbols, making them ideal for use in educational and training settings. The Aristo Duo combination lettering template in medium script (straight script) offers two letter heights of 3.5 mm and 5 mm, and is perfectly suited for pigment liners and fine mechanical pencils. With dimensions of 245 x 75 mm, the template complies with the standards ISO 3098/1, DIN 6776, and the standards for microfilming.