Portable electric fire with 4 replaceable vertical wire-wound elements of 700 watts each and 2 switches, whole of brass and copper construction, removeable contact points of elements patented in 1935 (pat no 42 2836) by Koninklijke Fabriek "Inventum" of Bilthoven, Netherlands, made in England, 1935-1940 Portable electric fire with 4 replaceable vertical wire-wound elements of 700 watts each and 2 switches 1935-1940
Culpeper microscope with rack focusing and boxfoot, English, early 19th century Culpeper microscope with rack focusing and boxfoot 1801-1830
Culpeper microscope, in pyramidal box, unsigned but probably English, early 19th century Culpeper microscope 1801-1830
Culpeper microscope with drawer of accessories in base, with pyramidical case, English, mid 18th century Culpeper microscope with drawer of accessories in base