A 36-tube tilting manometer for measuring pressure on models in subsonic wind tunnels and fan test sets. A backboard with graduated scale holds each manometer tube. For safety and convenience the manometer uses water as the manometer fluid. This is via an adjustable reservoir with fine-adjust handwheel held at the side of the equipment. Water colouring is included to aid visibility.
The top of each manometer tube has a connection piece for tubing to connect to pressure tappings on the equipment being monitored. The whole manometer tube assembly is mounted on a swivel. This allows it to be tilted in preset increments to increase the sensitivity of measurement. Adjustable feet enable the whole apparatus to be precisely levelled before use. The manometer is supplied with operating instructions, a filling funnel and a spirit level.