AB Spencerian ruler

This is a ruler designed by Aquino da Silva, it's a very handy lining tool for Spencerian. The ruler is suitable for daily practice or lining on small cards and envelopes. Place this instrument against a ruler, place the pencil point in the little holes and slide it horizontally in order to trace the lines for ascenders, descenders and x-heights (1, 1.5, 2, 2.5, and 3 mm and a 52-degree slant angle).

A tutorial for using this product is available on YouTube by copying this link:

https://youtu.be/6GpraRoy-fQ?si=ThlUI2f4tRplhv2j