Weights marked 'Crosby...', one gauge marked 'Westinghouse...', other gauge is marked 'Bourdon' with no other indication regarding manufacturer.

Weights patented 11 March, 1884.

Used to test the accuracy of indicated steam pressure of any given steam pressure gauge against one or more of a series of dead weights.

Dead weight pressure gauge tester, metal/glass, Crosby S G & V Co / Westinghouse Brake Australasia Pty Ltd / Bourdon, Boston, USA/ Australia, 1880s.
Used to test the accuracy of indicated steam pressure. (-1) Base, (-2:3) two sample gauges, (-4:12) 9 x 20 psi brass sheathed lead weights, (-13) 1 x 10 psi brass sheathed lead weight, (-14) 1 x 5 psi brass ring, (-15) 1 x 2.5 psi brass ring, (-16) 1 x 65 lbs psi brass sheathed lead weight.

Made: S.G. & V. Crosby Co.; Boston, Massachusetts, USA; 1880 - 1889

Made: S.G. & V. Crosby Co.; Australia; 1880 - 1889


Used: State Rail Authority of New South Wales;

(-1)The following engraved on stem section, 'PAT. MAR. 11-1864'. (-2)Manufacturer's details painted on face, 'STEAM HEATING / WESTINGHOUSE BRAKE / A'SIA PTY LTD'. (-3)Manufacturer's details painted on face, 'BOURDON / STEAM GAUGE / ... / No. 13390 / MADE IN AUSTRALIA'. (-4:12)Following details cast into top face of discs, '4 LBS. AVDP=20LBS SQ IN. / CROSBY / S.G. & V. CO. / BOSTON / U.S.A. PAT'D MAR 11 '84'. (-13)Engraved as for (-12) except rated for '...10 LBS SQ. IN.'

B2561

1880 - 1889

370 mm

185 mm

320 mm