One block of wood
1790-1819
Magnetron block
1940
(Tapering) lead glass block
1990
Two brass pulley blocks by Adams
1762
Kofler block for determining melting points
Block of gamma-ray protection glass
1897
Desk note paper block of imitation amber catalin
1948-1960
Block of slender wooden matches, United States, 1902
Semi-circular glass block (slightly chipped)
1900-1980
Scribing block
Wooden Test Tube Blocks, X 4
1900-1980
Concrete block made from refuse, Colombia
1980-1989
Granite Block from Stone Boiler
Knapping Block
Rubber block holding 11 glass test-tubes
Wooden block used in rabbit ear chamber research
1950-1980
Wooden Test Tube Blocks, X 4
1900-1980
Block of wood from North Eastern Railway
Joly photometer with ground glass diffusing blocks
Block of RW 26 glass irradiated at one end, 1968
1968
Two rebated mahogany blocks and seven steel screws
Rectangular glass block
1900-1980
Electrical connector
1930-1970
Cylindrical block with four vertical equidistant holes
Wooden printing block
Concave iron block with crystal quartz attached
Trimming block for the Sorvall Porter Blum MT2 ultramicrotome
Triangular mahogany block with triangular butterfly screw
Hand-cut curved wood block for rotary press
Wooden block with metal spikes
1815
Early hollow glass building block
UK5 solar array diode block
Three triangular keyway slotted mahogany blocks
Printer's illustration blocks illustrating a series of electron micrographs of the intima of blood vessels
Nozzle block
Wooden Test Tube Blocks, X 4
1900-1980
4 printing blocks showing x-rays of feet
Wooden Test Tube Blocks, X 4
1900-1980
Corrugated Refractory Block for Lining Base of Blast Furnace
1958
Joisting block (Mitre template)
Part of model illustrating roller transport
Ship's double block shell with sheave pin installed and shell shaped
Ship's rigging pulley block, with corners sawn off
Pulley block with three sheaves in line
1900-1983
Pulley Block
1800
Cylinder Block for Triple-Expansion Marine Steam Engine
1924-1928
Michell thrust block complete from Triple-Expansion marine steam engine
Wooden model of detaching weight of Fitzgerald sounding machine
1867
Rectangular glass block
1900-1980
