Filmatic  Unit 1050-2 FUS-3 (Size 3) Filling Piston for National Instrument Company, USA.

Originally bought as two pistons, selling individually. Therefore you'll receive this lot contains:

1x Filamatic Filling Unit 1050-2 FUS-3 9/32" Bore x 3 1/4"

2x Length of tubing

Assorted hardware, you'll receive half of the hardware photographed (unless you buy both units in a single transaction)

Documentation (or copy thereof)

Brand new item, tested with water by manufacturer, unused and undamaged.