Orrery , 1761
RS.3384
Cassegrain telescope , ca. 1820
RS.8459
Standard Troy Pound, 1853
RS.8478
Compound microscope, ca. 1810
RS.8480
Repeating altitude azimuth circle, ca.1809
RS.8464
Dividers, 1697
RS.8482
RS.8481
Hydrometer, ca. 1836
RS.8465
