3½ HP Bamford OV (Old Vertical) with Millars mud pump.
This engine was sold on 20 April 1937 by Bamfords to Millars of Bishops Stortford (one of 4 engines sold to Millars
that day). Millars would have fitted the pump at their factory and sold it on. It's know that this particular
set-up spent at least part of its working life on the Rochdale Canal