And the strap?
Do you think one thick one would be best say 40mm or one top and one bottom at 15mm?
I will suss out 3 options,
A plain one without any thigh form and strap/s? attached underneith with the pen holder on top. I will make the pen holder bit and the clip multi handed with holes to suit both handed people. And just leave it so the user bolts the bits on how they like with M3 grip nuts and bolts. Also allows people to replace bits when the springs go on the pen holders or the clip goes. I can also put a couple of holes down the side in case people want to side grip thier paper.
A thigh form one strap/s through the form and pen holder underneith again with the holes to suit either hand.
And a A4 drilled for sideways or up down with again some holes for a pen clip either side.
H'mm just to note if I do start making these things a suitable cut of any profits will go to the poppy appeal or the RNLI or we can make them officail PPrune products and Danny can have his cut.