Thanks to those who helped me obtain a "digitizing sight" for an HP 9872 (or 722X or 747X) plotter. This is a device which takes the place of a plotter pen and allows accurately positioning the pen over a point on a drawing in order to capture the coordinates. The 1980 HP Measurement/Computation catalog lists this on page 657 as accessory part 09872-60066.
|HP Catalog Pages||The Old Calculator Web Museum||Museum of HP Calculators|
|HP 9825 web||HP 9825 Calculator and peripheral documentation|
|My HP 9825 Operating & Programming Course Certificate of Achievement - August 1979|
Communicate with Dave Meier.