I have an "Intuos4 Extra Large CAD” digitizer and need to take accurate one to one plots from it into rhino 4, it basically works like a very accurate mouse with a cross hair on it, it works well and I can create 2d sketches from it however the problem I have is that the scaling is based on the current viewport scale
so if I had a rectangle template on the digitizer and clicked on the two points to create the rectangle in rhino the rectangle will not come out the correct size in the rhino screen and if I then zoom out and repeat I create another bigger rectangle even though I digitised from the same points.
what I really need is to fix the scale in the view port at one to one with the digitizer and lock it so it can’t change whilst I am digitising. is this possible?
perhaps I could set and scale a viewport based on a reference rectangle I have on the digitiser and then save this as a template so I can call it up each time I want to digitize?
the key here is that the scaling is set and locked so when I zoom in and out it doesn’t change the scale
any comments or solutions?