eights and mercury thermometer from the Castlereagh Collection for Constantinople (Turkey), and original correspondence for Constantinople and Iona 1800-1818
Set of 7 domed octagonal brass weights, from the Castlereagh Collection for Constantinople (Turkey), unsigned, Constantinople, Turkey, 1800-1818 Set of 7 domed octagonal brass weights 1800-1818
Set of 4 flat brass grain weights, from the Castlereagh Collection for Constantinople (Turkey). Set of 4 flat brass grain weights 1800-1818
Boxed thermometer with brass weight, from the Castlereagh Collection for Constantinople (Turkey). Boxed mercury thermometer with brass weight, that came from the Castlereagh Collection in the drawer for Constantinople (Turkey) 1800-1818
Original Correspondence from the Castlereagh Collection for Iona. Original correspondence from the Castlereagh Collection for Constantinople Iona 1800-1818
Original Correspondence from the Castlereagh Collection for Constantinople (Turkey). Original correspondence from the Castlereagh Collection for Constantinople (Turkey) 1800-1818
Reconstruction of Philo's thermoscope, primitive temperature measuring device invented by Philo of Byzantium, 2nd century B.C. Reconstruction of Philo's Thermoscope 200-101 BCE