It consists of two glass tubes
approx. 220mm long x 8mm bore, one closed at the top and the other tube
open. The lowers ends of tubes are drawn out and connected together by 1.5m
of rubber pressure tubing 10mm outside diameter x 5mm inside diameter. Both
the tubes are mounted on brackets which can be locked in any position on
metal supporting rods. Stand is made of approx. 1.06m in height and carries
a graduated scale 0 to 100 cm with mm divisions in center and figured every
2 cm up either side on heavy metal box. Mercury required for this apparatus
is approx. 30 cm³. supplied without mercury.
