Block with inclined ends, mahogany, brass
Two rebated mahogany blocks and seven steel screws
Early hollow glass building block
Hand-cut curved wood block for rotary press
Three triangular keyway slotted mahogany blocks
Rectangular glass block
1900-1980
Rubber block holding 11 glass test-tubes
Wooden Test Tube Blocks, X 4
1900-1980
Wooden Test Tube Blocks, X 4
1900-1980
Printer's illustration blocks illustrating a series of electron micrographs of the intima of blood vessels
UK5 solar array diode block
Granite Block from Stone Boiler
Electrical connector
1930-1970
Wooden Test Tube Blocks, X 4
1900-1980
Concrete block made from refuse, Colombia
1980-1989
Two brass pulley blocks by Adams
1762
Block of gamma-ray protection glass
1897
Scribing block
Desk note paper block of imitation amber catalin
1948-1960
Wooden block used in rabbit ear chamber research
1950-1980
Wooden block with metal spikes
1815
Block of slender wooden matches, United States, 1902
Magnetron block
Knapping Block
Corrugated Refractory Block for Lining Base of Blast Furnace
1958
Semi-circular glass block (slightly chipped)
1900-1980
Rectangular glass block
1900-1980
Wooden Test Tube Blocks, X 4
1900-1980
Fifteen sample blocks of carbon compound
T.C.C. block type 1 mfd. Condenser
Trimming block for the Sorvall Porter Blum MT2 ultramicrotome
Triangular mahogany block with triangular butterfly screw
Joly photometer with ground glass diffusing blocks
Block of RW 26 glass irradiated at one end, 1968
1968
Wooden printing block
(Tapering) lead glass block
1990
Block of wood from North Eastern Railway
Joisting block (Mitre template)
4 printing blocks showing x-rays of feet
Concave iron block with crystal quartz attached
Kofler block for determining melting points
Nozzle block
Shoemaker's blocking pliers
Contactor block from the incomplete electric clock movement
1840-1877
Two tapered pulley blocks each with 3 pulleys and 2 hooks
1752