MS-194 PVG EXPANSION APPARATUS

Comprises two cast iron uprights height 175 mm. held by two
nickel plated steel rods. These side upright supports an expansion
bar of length 370 mm., fixed to one upright and resting on a
0
friction pointer at the other which moves on a scale reading 0-90 .
Supplied complete with one each of aluminium, brass and iron
expansion bar