The item available here is a new old stock Gemu flow meter.  It comes as shown in new condition in manufacturer's packaging.  The box shows noticeable shelf wear, but the item shows as new.  I don't believe this is the original box for this flow meter, so the real model number is not known.

This item has not been tested, and comes with a 30 day return policy from the date the item was shipped. Postage is not covered.

Here's the specs:

20-260 GPH

*See pictures for exactly what you will receive*

Items will be paid for immediately and will be shipped using USPS or UPS.