Plastic sliding calipers that are known as Squirrel Devices provide better access to STEM material for students who are blind or have low vision. The tactile caliper enables students with vision disabilities to read measurements in Braille just like a student with sight would on a standard ruler. Jain and Singhal, who are PhD candidates in Course 2 (mechanical engineering) at MIT, co-founded Squirrel Devices to create better access to STEM courses for students with vision disabilities. The accessible calipers are their first device and help make geometrical shapes and lengths able to be measured by students who are blind.
Read more about the tactile calipers on GAATES.