Modiffed Macintosh and Fildes pattern has all metal construction
consisting of a S.S. Jar with a top flangs recessed for a
toroidal rubber sealing ring and a cover held in place by
a strong bridge clamp. The cover is fitted with two needle
valves for evacuation and a sachet containing a catalyst.
A side arm on the jar is provided for connecting to Semisolid
(The Unit is supplied without Semi-Solid Lucas Indicator).
Supplied complete with pressure-cum vaccum gauge.