Un-mounted glass tube, limbs with a third short limb for connecting a suction tube
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Two glass tubes 220mm long x 8mm bore one closed at the top and other open. Lower ends of two glass tubes are joined by 1 meter of pressure tubing. Both tubes mounted on sliding brackets lockable in any position on metal support rods. Polished wooden stand with graduated scale 0-100 cms, with mms in centre and figured every cm on either side. Supplied without mercury.
A standard car pattern with an integral pressure gauge from 0 to 4 kg/cm2 and rubber tube adopter. The pump has a cylinder and provided with integral pressure tube and standard type valve connector.
Demonstration type, fully enclosed in a transparent synthetic case for demonstration. 100 mm coated dial reads from 28 to 32 inches and 950 to 1040 millibars, air tight sealed all around, pressure rubber bulb provided to force the movements, for educative demonstration.
Glass tube 90 cm long with bulb on shorter limb.
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