Triangle protractor which can be used by blind users because of the tactile elements.

With this model a blind person can measure or draw the same thing a sighted user can with a triangle protractor because of the tactile elements.

you can:

measure and draw 90 degree angles

measure and draw lines of 1 cm.

measure and draw angles in steps of 10 degrees
You can find this model on https://tactiles.eu/3d-model/tactile-triangle-protractor-for-blind-users/ Tactile contains models designed specifically for people with vision impairment

Ultimaker

Ultimaker 2

No

No

,2mm

10%