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Digitally restored from a late 19th Century encyclopedia.
Detail of rusty oxide nut and bolts on white background
One metal bolt on white background, top view
Metal
macro bokeh shot of screw threads
Many screws on white background.
The hi-precision mechanical part manufacturing concept. Closeup scene the spare parts  lead ball screw parts in the light blue scene.
rusty spring
3d rendering of archimedes screw isolated on white
Long metallic screws superimposed on each other - screw thread close-up
Rope Set. A skein of thread close-up background macro. Weaving thread scheme render
Magnified close up of a rusted screw. Focus stacked.
abstract group of spare part for background used
Facial Features Pattern Design on Banknote
Close-up scene of lead ball screw spare part for CNC machine. The hi-technology CNC machine spare part manufacturing concept.
Rusty Truck Spring
Engraving of a Bell-shaped bee hive and an English bee hive published in \
Sign on Reddish Stone Reading: CAUTION Slippery When Wet
Steel spring. Spring tension. Spring made of steel on a white background.
Close-up PVC pipe bending spring with DIY
Abstract shadow black white shadow of fern leaves on white background. Empty space for copy. Clipping Path included.
bolt thread close up photo
Old screw on a white background. Large rusty screw close-up.
A large, used screw with nut on a grey fine leather.
Self-tapping screw covered with rust close-up, macro shot
The young City of Boston erected a  beacon on one of its hills, then called Beacon Hill, was erected to warn neighboring communities of enemy danger. Pitch or tar was stored in the barrel and set afire when necessary.  The summit of Beacon Hill was 60 feet higher than it is now so the flames could be seen from a long distance.  First published in a 1877 isue of Harper's New Monthly Magazine
old rusty spiral iron rod on a red background
Plasterboard screw isolated on white.
Damaged screw on white background
Macro takes a picture of a screw.
Free Images: "bestof:Archimedes screw.JPG Archimedes' screw Public domain from Chambers's Encyclopedia Philadelphia J B Lippincott Company 1875 Added to illustrate article en"
Yellow insect repellant light globe screw fitting.jpg
Floodlamp bulb screw fitting.jpg
Frosted light globe screw fitting.jpg
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Clear light bulb.jpg
Six way screwdriver philips.jpg
Light bulb clear bayonet fitting.jpg
FieldsMedalFront.jpg
May_23rd,_2015_Mapledurham_hydro_turbine_(4).jpg
Council4lands.jpg
Nokia 770 with Linux article on screen.jpg
Silver back gorilla - Gorilla beringei.jpg
Philadelphia fleabane white flower with yellow center erigeron philadelphicus.jpg
MigrantMotherColorized.jpg
The-city-of-philadelphia-from-the-art-museum-steps.jpg
A truck carries many aspen cut trees.jpg
Music Cabinet by unknown Cincinnati maker, c. 1875-1890, American black walnut and brass - Cincinnati Art Museum - DSC03045.JPG
Piano, Horace Waters, New York - O. Henry Museum - Austin, Texas - DSC09223.jpg
Flag of the USA 2005 1.jpg
DuplexScaling.jpg
Megachile_albitarsis,_f,_back,_Chambers_co,_Texas_2016-07-27-17.29.jpg
Megachile_albitarsis,_f,_side,_Chambers_co,_Texas_2016-07-27-17.52.jpg
Beacon Falls sneakers, children's, made by Beacon Falls Rubber Company of Connecticut, c. 1900 - Bata Shoe Museum - DSC00735.JPG
Megachile_policaris,_back,_chambers_co,_Texas_2016-07-27-18.00.jpg
Megachile_policaris,_side,_chambers_co,_Texas_2016-07-27-18.21.jpg
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United_States_Declaration_of_Independence.jpg
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Shakespeare.jpg
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The_Messenger_by_Sir_David_Wynne,_SUTTON,_Surrey,_Greater_London_(10).jpg
The_Messenger_by_Sir_David_Wynne,_SUTTON,_Surrey,_Greater_London_(11).jpg
The_Messenger_by_Sir_David_Wynne,_SUTTON,_Surrey,_Greater_London_(8).jpg
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