[BlindMath] A “Positive” Tactile Geometry Kit that changes how blind students draw and feel geometry

[Nirmal Verma]

Dear Friends,

Greetings!

I wanted to share a learning tool I recently observed that genuinely felt
different—not just “another adapted kit,” but something that makes geometry
click through the fingertips.

It’s called  “Tactor" - A Positive Geometry Kit” Manufactured by
Touche-tech Labs, Bangalore India.
Imagine a student places a sheet on the board and starts drawing. As the
pencil/roulette moves, the line rises right there—on the same side of the
paper—under the student’s fingers.

No flipping the sheet or placing drawing toold awkwardly. This single
change turns geometry from a memory-based activity into a real drawing
experience.

What I liked in the kit:
1) Positive tactile drawing system (instant touch-verification)

Students can literally trace what they just drew in the same moment. It’s
the kind of feature that makes you think, “Why wasn’t this always the
standard?”
2) Roulette / spur wheel (perforation wheel)

This is the real innovation. It lets learners create crisp straight
lines, smooth
curves, patterns and arcs. It’s the tool teachers have been waiting for.
3) Redesigned protractor (semi-circular angle tool)

Robust, stable, and tactile-friendly—so angle work becomes less about
struggle and more about understanding.
4) New ruler / scale

Stable and practical for accurate measurement and straight-line drawing.
A blind learner can draw with precision up to a quarter of a centimeter.
5) Special drawing board with an advanced rubber layer

This board is serious quality. It holds paper firmly (no sliding while
drawing), supports sharp tactile output
6) New compass (circles, arcs, constructions)

Completely new design—easy to handle, more practical, and includes a safety
mechanism.
Honestly, I can see this replacing the typical school compass in the long
run.
7) Line bisectors and construction supports

Helpful for step-by-step geometry constructions and accuracy.
8) Neatly packed compact box

Portable, classroom-friendly, easy to store—unlike older geometry kits that
were bulky and inconvenient to carry daily.
Why this matters

It supports:

   -

   independent geometry practice
   -

   stronger understanding of shapes, symmetry, angles, and constructions
   -

   better foundation for STEM learning
   -

   real-life spatial understanding (maps, layouts, diagrams, measurements)

If you have always wanted to learn geometry—or were fed up with the comical
geometry kits—this is something you should explore. I felt it was important
to share this with the group so that teachers, parents, educators, and
learners can see its possibilities.
Demo videos (worth watching)

   1.

   https://youtu.be/V4fvTpFFsEQ
   2.

   https://youtu.be/8S4-DlIALi8
   3.

   https://www.youtube.com/watch?v=sXy3DXlz1b0
   4.

   https://www.youtube.com/watch?v=DIN6litOmrA

As you watch, notice the key idea: the tactile diagram forms on the same
side of the paper where the student is drawing—so the learner can draw,
touch, verify, and correct immediately.

Warm regards,
Nirmal Verma
Inclusive Education and AT Specialist

whatsapp and Phone : +91-9311088660