Please do not reproduce without permission from Puke Ariki.
Contact for more information. Order images online here.

Object Detail

A tubular plastic calibration flask with a removable black rubber base with a hole at the center. The flask has a scale from 1 -45 printed on paper and marked on one side of it.
Production Date
Circa 1960s
Subject Person
Credit Line
This calibration flask was used by prolific Okato inventor Charles W (Charley) Maxwell. Maxwell used it to help test his milk meter prototype that he designed during the 1960s.
Accession No


Can you help us? Click ‘Add Comment’ to share names, details and stories to help enrich the collection.

Be the first to comment.