Sketch of Tower Bridge Hoists showing arrangement of locking gear by which the outer gate must be locked before door of cradle can be closed
1891
Eight sky sketches by William Ascroft
1884
Eight sky sketches by William Ascroft
1884
Nine sky sketches by William Ascroft
1884
Nine sky sketches by William Ascroft
1884
Ten sky sketches by William Ascroft
1884
Nine sky sketches by William Ascroft
1884
Queen Elizabeth at Clydebank
1939
Queen Elizabeth in Dry Dock, Southampton
1946
Queen Elizabeth in Dry Dock, Southampton
1946
Three sky sketches by William Ascroft
1885
Three sky sketches by William Ascroft
1885
Sketch of wood shop
Sketch of automatic gear box
Eight sky sketches by William Ascroft
1885
Eight sky sketches by William Ascroft
1885
Four sky sketches by William Ascroft
1886
Three sky sketches by William Ascroft
1885
Testing the combustion chamber of a jet engine
1947
Four sky sketches by William Ascroft
1886
Weighing
Sorting bulbs
Seven sky sketches by William Ascroft
1885
Nine sky sketches by William Ascroft
1885
Eight sky sketches by William Ascroft
1885
Nine sky sketches by William Ascroft
1885
Three sky sketches by William Ascroft
1885
Ten sky sketches by William Ascroft
1885
Ten sky sketches by William Ascroft
1885
Eight sky sketches by William Ascroft
1885
Eight sky sketches by William Ascroft
1884
Ten sky sketches by William Ascroft
1884-1885
Ten sky sketches by William Ascroft
1884
Ten sky sketches by William Ascroft
1884
Nine sky sketches by William Ascroft 1883
1884
Pencil sketch, testing instruments for flight
1952
Pencil sketch, NPL whirling arm
1953
Pencil sketch, Heston WAF lecture
1957
Sky Sketches, illustrating optical phenomena ...
1883
pencil sketch
1943
Felix Pole
1937
Sky Sketches, illustrating optical phenomena
1883
Sky Sketches, illustrating optical phenomena
1884
Eight sky sketches by William Ascroft
1884
Eight sky sketches by William Ascroft
1884
Nine sky sketches by William Ascroft
1884
Nine sky sketches by William Ascroft
1884
Eight sky sketches by William Ascroft
1884
Nine sky sketches by William Ascroft
1884
Ten sky sketches by William Ascroft
1884