pk_test_51NPihrD2Glr2YKtWirjF3a8nYpJhqiIc5FtfkHOkQbmuHzR4mas8psFK1RiUyuDaY4S1pw5zUVQAayfCmU8wdN4o00kus9h4rd
Thermoscope. A glass weather glass similar to types used in 17th Century. Made from Borosilicate (Pyrex) glass in two parts in our own glass workshops we once had at Merton. Liquid not supplied - can be simply filled with some coloured water. It is responsive to pressure and temperature change. An unusual simple barometer. Delivery by arrangement - contact us to discuss feasibility