Robert Gamez lining up a putt during the first round for THE PLAYERS Championship held at the TPC Stadium Course in Ponte Vedra Beach, Florida on...
Kenny Perry during the third and final round of the Merrill Lynch Shootout at the Tiburon Golf Club in Naples, Florida on November 12, 2006.
Tommy Armour III during the final round of the PGA TOUR's Sony Open, January 15, 2006 at the Waialae Country Club in Honolulu, Hawaii.
Holmes in action on the ninth green during the third round of the PGA TOUR's Sony Open, January 14, 2006 at the Waialae Country Club in Honolulu,...
Holmes lines up his putt on the 13th green during the second round of the PGA TOUR's Sony Open, January 13, 2006 at the Waialae Country Club in...
Shaun Micheel in action during the third round of the Southern Farm Bureau Classic at Annandale Golf Club in Madison, Mississippi on November 5, 2005.
Heath Slocum in action during the third round of the Southern Farm Bureau Classic at Annandale Golf Club in Madison, Mississippi on November 5, 2005.
Bob Tway in action during the second round of the Southern Farm Bureau Classic at Annandale Golf Club in Madison, Mississippi on November 4, 2005.
Joey Snyder III lines up an eagle putt on the 18th green in action during the third round of the Southern Farm Bureau Classic at Annandale Golf Club...
Jim Ahern in action during the third round of the Greater Hickory Classic at Rock Barn on the Jones Course in Conover, North Carolina on October 9,...
Jim Ahern in action during the third round of the Greater Hickory Classic at Rock Barn on the Jones Course in Conover, North Carolina on October 9,...
Jim Ahern in action during the third round of the Greater Hickory Classic at Rock Barn on the Jones Course in Conover, North Carolina on October 9,...
Jim Ahern in action during the third round of the Greater Hickory Classic at Rock Barn on the Jones Course in Conover, North Carolina on October 9,...
Dana Quigley in action during the third round of the Greater Hickory Classic at Rock Barn on the Jones Course in Conover, North Carolina on October...
Ted Purdy lines up a putt on the third hole during the third round of the 2005 Michelin Championship Saturday, October 15 at the TPC at Summerlin in...
Lee Janzen during the first round of the 2005 Buick Championship at The Players Club at River Highlands in Cromwell, Connecticut on August 25, 2005.
Robert Allenby during the second round of the Buick Open at Warwick Hills Golf and Country Club in Grand Blanc, Michigan on July 29, 2005.
John Cook lines up his putt on the 17th hole during Round Three of The Fedex St. Jude Classic at TPC @ Southwind in Memphis, Tennessee on May 28,...
Zach Johnson lines up a putt during the third round of the Buick Open at Warwick Hills Golf and Country Club in Grand Blanc, Michigan on July 30,...
Doug Barron during the first round of the Buick Open at Warwick Hills Golf and Country Club in Grand Blanc, Michigan on July 28, 2005.
Method of using quadrant fitted with a plumb line and marked with shadow scales to measure the height of a tower. From Robert Fludd "Utriusque cosmi....
Using a quadrant with a plumb bob to calculate the height of a tower by triangulation. From Sebastian Munster "Rudimenta Mathematica", Basle 1551....
Method of using quadrant fitted with a plumb line and marked with shadow scales to measure the depth of well. From Robert Fludd "Utriusque cosmi....
Hevelius observing through refracting telescope on stand fitted with quadrant and plumb-bob so altitude of object observed could be noted. From...天文學家
Bernardino Drovetti measuring a colossal head in the Egyptian desert, 1819. Drovetti and his followers using a plumb line to measure the head. He was...埃及, 考古學家
Michael Jordan during the Pro-Am prior to the 2007 Wachovia Championship held at Quail Hollow Country Club in Charlotte, North Carolina on May 2,...米高·佐敦 - 籃球
Bill Glasson in action during the third round at the Reno-Tahoe Open, August 20 held at Montreux GC, Reno, Nevada.
John Daly and partner J.B. Holmes during the third and final round of the Merrill Lynch Shootout at the Tiburon Golf Club in Naples, Florida on...
Gunner with quadrant marked with shadow-scales and fitted with a plumb line, In the foreground is a mortar whose elevation he will calculate. From...
Circa 1200, Masons check the angle of a stone tower using a plumbline, while construction workers are busy with wheelbarrows, bricks and cement.
Circa 1250, Workmen using a line and plummet level, a windlass and basket, a plumbline and mortar bowl to construct a wall. At the bottom middle a...建築工人
Seated model before mural, wearing two-texture, gray French velveteen with polished black wool suit, made of a short-shouldered jacket and plumb-line...
