Hydrometer
code: LVSAV1985.072
Description
"Twadells" leadweighted, mercury weighted and tar weighted hydrometers for measuring specific gravity from BP Pumpherston Detergent Works.
.001 Lead hydrometer, in red cardboard box, quite faded, with blue and white label on top. 170 mm wide x 25mm long x 23 mm deep approx.
.002 Mercury Hydrometer, in brown cylindrical tube, with red ends, white and blue label on tube. 210 mm long, 30 mm diameter approx.
.003 Mercury Hydrometer, in a red paper covered cardboard box, box quite bashed and corners of lid coming apart, 240 mm wide x 25 mm long x 25 mm deep approx.
.004 Tar filled Hydrometer, in brown cylindrical tube, 270 mm long, 40 mm diameter, tube is a bit bashed.
.005 Mercury filled Hydrometer in brown cylindrical tube (purple when lid removed), 220mm long 38 mm diameter.