Compass aid 10 cm transparent with tactile markings

Practical compass aid for visually impaired people, transparent and translucent yellow.
5mm hole spacing, suitable for ballpoint pens. A smaller pin hole at zero.
Scale with tactile lines per cm. A dot marks every 5 mm.

Material: plastic, thickness 1.5mm

Shipping after advance payment on account, shipping costs 4.19€.
Available from April 28th and then within 3-5 working days within Germany.