There’s something in the air.
![Powerhouse props prop hire rental vintage industrial moisture meter lab testing equipment](https://powerhouseprops.co.uk/wp-content/uploads/2023/07/Powerhouse-props-vintage-industrial-moisture-meter-lab-testing-equipment-1-1024x847.jpg?v=1690114130)
A set of Barographs of various age and in various condition; originally used for recording changes in barometric or atmospheric pressure on a graph. You could of course use it to measure shock waves, sound waves, seismic shock or whatever else you can dream up. 7 available.