Aristo dimensionally stable, dimensionally stable precision stencils are provided with sharp-edged symbols that have been selected according to a wide variety of uses and requirements. The 155 x 155 mm stencil is used for training and studying to draw circuit symbols for electrical engineering and electronics. Made of contrast-enhancing orange-transparent plastic, the stencil complies with the standards DIN 40700/1, DIN 40700/8, DIN 40700/9, DIN 40700/10, DIN 40700/14, DIN 40706, DIN 40712, DIN 40713, DIN 40717 and DIN ISO 1302 as well as the standards for microfilming. Equipped with ink nubs, the template is suitable for 0.35 and 0.5 mm ink pens and 0.3 and 0.5 mm fine lead pens.