Related Clues:
- Done curiously with air, not with liquid
- (Of barometer) using an evacuated vessel
- Type of barometer — arid one (anag)
- Pressure indicator
- Emperor needs outside help - an indication of pressure
- Pressure gauge
- Robot needing energy for day without using liquid
- One can tell what pressure we are under
- Traffic circling capital dropping initial indicator
- Instrument for the front porch? Order one finally in deal
- Glass or beer-mat needs changing
- It measures atmospheric pressure
- Indicator of change, sign mostly displayed in centre of trade
- Instrument to measure atmospheric pressure
- Pressure is put on it, naturally, for recording