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Tower crane on construction site with slewing unit, horizontal jib, and trolley for moving load, operator's cab, and passenge...
Tower crane on construction site with slewing unit, horizontal jib, and trolley for moving load, operator's cab, and passenger aircraft flying above





Spit moved by counterweight, activated by hot airflow from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 21 r...
Spit moved by counterweight, activated by hot airflow from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 21 recto





England, Bristol, Bristol. One of two horn-shaped sculptures that act as counterweights on Pero's Bridge, a pedestrian bascul...
England, Bristol, Bristol. One of two horn-shaped sculptures that act as counterweights on Pero's Bridge, a pedestrian bascule bridge over St Augustine's Reach in Bristol Harbour.





Control panel for Sassafras River drawbridge, Chesapeake Bay, Georgetown, Maryland, United States of America, North America





Chester River drawbridge, Chesapeake Bay, Chester, Maryland, United States of America, North America





Bridge from Davenport (Iowa) to Moline (Illinois) with welcome to Illinois sign over the Mississippi River, USA





The House With Balls, Ahmedabad, India, Matharoo Associates, House with balls-shuttering system with concrete counterweights.





Concrete counterweights for use on construction cranes. Vancouver. British Columbia, Canada





England, Bristol, Bristol. Pero's Bridge, a pedestrian bascule bridge over St Augustine's Reach in Bristol Harbour.





An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (left side), wal...
An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (left side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





Study of rule to calculate counterweight of scale beams (in connection with folio 910 verso); note on triple form of arteries...
Study of rule to calculate counterweight of scale beams (in connection with folio 910 verso); note on triple form of arteries; doubling cube or Delian problem, from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 1031 verso





On the left, nature, strength and utility of the pulley and fitting of counterweights to scale beams; on the right, one- and ...
On the left, nature, strength and utility of the pulley and fitting of counterweights to scale beams; on the right, one- and two-throat pulleys, rods and weights from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 566 recto





A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end kn...
A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (left side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





Pulleys, weights and counterweights from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 427 verso





An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (right side), wa...
An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (right side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end kn...
A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (right side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead', and walking bea...
An oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead', and walking beam. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





England, Bristol, Bristol. Looking across Pero's Bridge, a pedestrian bascule bridge over St Augustine's Reach in Bristol Har...
England, Bristol, Bristol. Looking across Pero's Bridge, a pedestrian bascule bridge over St Augustine's Reach in Bristol Harbour.





Concrete counterweights hanging from a pulley This system keeps the railroad´s electric cables in correct tension Location Ou...
Concrete counterweights hanging from a pulley This system keeps the railroad´s electric cables in correct tension Location Oulu Finland Scandinavia Europe





Knapps Narrows Drawbridge, the busiest drawbridge in the United States,Tilghman Island, Maryland USA





Several groups of rods with ropes, pulleys and counterweights, small manly head and small human eye, mechanical devices with ...
Several groups of rods with ropes, pulleys and counterweights, small manly head and small human eye, mechanical devices with springs from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 993 recto





Above, three notes on gravity; eleven figures showing beam lifted to one tip only through rope (with or without counterweight...
Above, three notes on gravity; eleven figures showing beam lifted to one tip only through rope (with or without counterweight), from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 737 recto





Accounting notes with three different kind of coins: Rhenish florin, scudo and denarious, beams suspended from ropes, by pull...
Accounting notes with three different kind of coins: Rhenish florin, scudo and denarious, beams suspended from ropes, by pulleys and by counterweights, from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 846 recto





Method of hoisting ships, Crete, Greece, from La Cosmographie Universelle, 1575, by Andr? Thevet





Knapps Narrows Drawbridge, the busiest drawbridge in the United States,Tilghman Island, Maryland USA





High dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end know...
High dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (left side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





The House With Balls, Ahmedabad, India, Matharoo Associates, House with balls-house with balls-shuttering system with concret...
The House With Balls, Ahmedabad, India, Matharoo Associates, House with balls-house with balls-shuttering system with concrete counterweights.





England, Bristol, Bristol. Looking across Pero's Bridge, a pedestrian bascule bridge over St Augustine's Reach in Bristol Har...
England, Bristol, Bristol. Looking across Pero's Bridge, a pedestrian bascule bridge over St Augustine's Reach in Bristol Harbour.





Control panel for Sassafras River drawbridge, Chesapeake Bay, Georgetown, Maryland, United States of America, North America





Calculus of cubic root by geometrical means; study of rule to calculate counterweight of scale beams (related to folio 910 ve...
Calculus of cubic root by geometrical means; study of rule to calculate counterweight of scale beams (related to folio 910 verso); effects of light when eye stares at Sun from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 1031 recto





Child, boy, bridges of the nose, tennis ball, balances, profile 10 years, head, profile, nose, ball yellow, playing, concentr...
Child, boy, bridges of the nose, tennis ball, balances, profile 10 years, head, profile, nose, ball yellow, playing, concentration, symbol, balance, sense of balance, Balance, trick, skill, proficiency, Talent, game, studio, on the side





Knapps Narrows Drawbridge, the busiest drawbridge in the United States,Tilghman Island, Maryland USA





Cochin, India - September 04, 2012 Men working in the Chinese fishing net Using ropes, they hold the counterweights that allo...
Cochin, India - September 04, 2012 Men working in the Chinese fishing net Using ropes, they hold the counterweights that allows them to get on and off the fishing net





Automatic rasps cutting machine activated by counterweight from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio...
Automatic rasps cutting machine activated by counterweight from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 24 recto





Register of Milan Cathedral, weight and study of relationship between position of beam and counterweight preventing its fall ...
Register of Milan Cathedral, weight and study of relationship between position of beam and counterweight preventing its fall from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 288 recto





A basic counterweight balancing scale at a construction site at the San Huang Zhai Monastery on the Song Mountain, China





England, Bristol, Bristol. Pero's Bridge, a pedestrian bascule bridge over St Augustine's Reach in Bristol Harbour.





Oblique motion, list of items to remember, study of weights: ropes hanging by pulleys and by weights to which human figures a...
Oblique motion, list of items to remember, study of weights: ropes hanging by pulleys and by weights to which human figures and counterweights are applied, study of Earth, from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 829 recto





A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end kn...
A high dynamic range, or HDR, image of an oil well pump jack in northeastern Colorado, showing motion of the pump, the end known as the 'horsehead' (left side), walking beam, crank, and counterweight. A pump jack is also known as a pumpjack, a pumping unit, a grasshopper pump, and a jack pump, among other names.





England, Bristol, Bristol. Pero's Bridge, a pedestrian bascule bridge over St Augustine's Reach in Bristol Harbour.





REPUBLICA CHECA. PRAGA (PRAHA). Detalle de portalón central de bronce, realizado en el 1927 por Otakar Sapniel. Representa ep...
REPUBLICA CHECA. PRAGA (PRAHA). Detalle de portalón central de bronce, realizado en el 1927 por Otakar Sapniel. Representa episodios de la construcción de la Catedral de Praga. Fachada Oeste. Catedral de San Vito. Praga. República Checa. Centro Europa.





Rods hanging from fixed ropes or movable by pulleys; springs bent with counterweights, from Atlantic Codex (Codex Atlanticus)...
Rods hanging from fixed ropes or movable by pulleys; springs bent with counterweights, from Atlantic Codex (Codex Atlanticus) by Leonardo da Vinci, folio 863 verso.





Concrete counterweights hanging from a pulley This system keeps the railroad´s electric cables in correct tension Location Ou...
Concrete counterweights hanging from a pulley This system keeps the railroad´s electric cables in correct tension Location Oulu Finland Scandinavia Europe
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