Parker Vacumatic Speedline Filling Unit leadhead Monitor the section temperature frequently

Monitor the section temperature frequently while heat is being applied (and monitor it continuously if a second set of hands is available)

Item C thru G are complete ring top blind caps  for Parker vest pocket pencils in hard to find colors

to save on shipping costs

The pens are dried out

It could easily be replaced with one of many available modern day fillers if they are cut down

Parker Vacumatic Speedline Filling Unit leadhead Monitor the section temperature frequentlySpeedline filling units for Parker Vacumatic fountain pens. Original Parker part. Available in standard or oversized. Unit A: Thread outer diameter is 0. 375 inch Unit B: Thread outer diameter is 0. 430 inch (Oversize) Unit C: Thread outer diameter is 0. 397 inch (Oversize)