One block of wood
1790-1819
Granite Block from Stone Boiler
Rectangular glass block
1900-1980
Pulley Block
1800
Hand printing block
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
Cylinder Block for Triple-Expansion Marine Steam Engine
1924-1928
Printer's illustration blocks illustrating a series of electron micrographs of the intima of blood vessels
Wooden Test Tube Blocks, X 4
1900-1980
Wooden Test Tube Blocks, X 4
1900-1980
Wooden Test Tube Blocks, X 4
1900-1980
Wooden block used in rabbit ear chamber research
1950-1980
Block of slender wooden matches, United States, 1902
Electrical connector
1930-1970
Desk note paper block of imitation amber catalin
1948-1960
Early hollow glass building block
Two brass pulley blocks by Adams
1762
Two rebated mahogany blocks and seven steel screws
Block with inclined ends, mahogany, brass
Three triangular keyway slotted mahogany blocks
Cylindrical block with four vertical equidistant holes
Hand-cut curved wood block for rotary press
Scribing block
Concrete block made from refuse, Colombia
1980-1989
Rectangular glass block
1900-1980
Wooden block with metal spikes
1815
Rubber block holding 11 glass test-tubes
Michell thrust block complete from Triple-Expansion marine steam engine
UK5 solar array diode block
Magnetron block
1940
Block of gamma-ray protection glass
1897
Wooden model of detaching weight of Fitzgerald sounding machine
1867
Pulley block with three sheaves
1900-1983
Pulley block with three sheaves
1900-1983
Pulley Block
1800
Orangey-red metallic block with spring
1972-1974
Ship's rigging pulley block, ready for cheecks shaping
Ship's rigging pulley block, ready for setting in a clave
Ship's rigging pulley block, after grooving in the clave
Pulley block with two sheaves
1900-1983
Pulley block with two sheaves
1900-1983
Two Wooden Blocks for Wooden Bed Lathe, used by Pennington Mill Co. Ltd
Wooden Test Tube Blocks, X 4
1900-1980
Fifteen sample blocks of carbon compound
T.C.C. block type 1 mfd. Condenser
4 printing blocks showing x-rays of feet
