Silver disk pyreheliometer for measuring the power in solar radiation. Instrument purchased from Smithsonian Institution who developed the device. Can be seen in use in the photograph of the total solar eclipse of 1927 taken on top of the Cromwell…
2 string (wire) sonometer with screw tension. Dovetailed box with 4 sets of ornate slots between bridges. Later addition of small brass pulley on one end and brass hook on other to take wire with weights. Probably purchased by Prof Thomson.
The Conservative and Unionist Party were completely against the Liberal concept of Home Rule (devloution). This booklet commemorates a fete held at Fyvie Castle by the women's branch of the organization.