There’s something in the air.
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.
Get the right balance with these precision testers.
These are two really unusual original precision torsion balances. They are essentially an equal arm balance that uses horizontal steel bands instead of pivots and bearings to measure precise weight. In this case the Dutch one on the left is for anything up to 25milligrams and the one on the right up to 500milligrams. Clever […]
