


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

Wooden Test Tube Blocks, X 4
1900-1980

UK5 solar array diode block

Cylindrical block with four vertical equidistant holes

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

Scribing block

Wooden block with metal spikes
1815

Electrical connector
1930-1970

Two brass pulley blocks by Adams
1762

Block of gamma-ray protection glass
1897

Desk note paper block of imitation amber catalin
1948-1960

Wooden block used in rabbit ear chamber research
1950-1980

Concrete block made from refuse, Colombia
1980-1989

Printer's illustration blocks illustrating a series of electron micrographs of the intima of blood vessels

Granite Block from Stone Boiler

Block of slender wooden matches, United States, 1902

Triangular mahogany block with triangular butterfly screw

Joly photometer with ground glass diffusing blocks

Concave iron block with crystal quartz attached

Block of RW 26 glass irradiated at one end, 1968
1968

Wooden printing block

(Tapering) lead glass block
1990

Joisting block (Mitre template)

Kofler block for determining melting points

T.C.C. block type 1 mfd. Condenser

Trimming block for the Sorvall Porter Blum MT2 ultramicrotome

Knapping Block

Corrugated Refractory Block for Lining Base of Blast Furnace
1958

Nozzle block

4 printing blocks showing x-rays of feet

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

Block of wood from North Eastern Railway
Shoemaker's blocking pliers
Contactor block from the incomplete electric clock movement
1840-1877
Cylindrical wooden block with groove in its.
1880-1900