Take the stressful twist out of your measurements with this fantastic Helix Draw Set. This bit of kit extends out to a diameter of 320 millimetres, with the capacity to extend a little over an extra 140 millimetres with a fine extension arm for larger pieces.
For geometric precision, this set is an excellent piece of stationary for you or your kids.
- Contains pen clamp.
- Adjustable thumb wheels.
- Ideal for technical drawing.
Helix Draw Set 6 Pack