It's about seven-tenths as long as The Wingspan of a 747
In other words, 308 shaftments is 0.6850 times the length of The Wingspan of a 747, and the length of The Wingspan of a 747 is 1.460 times that amount.(a.k.a. Boeing 747, a.k.a. Jumbo Jet, a.k.a. Queen of the Skies) (for Boeing 747-8 series)
The wingspan of a Boeing 747-8 is 449 shaftments. Fully loaded, the 747 can travel 54,400,000 shaftments before refueling.
It's about three-fifths as tall as a Giant Sequoia (tree)
In other words, 308 shaftments is 0.620 times the height of a Giant Sequoia (tree), and the height of a Giant Sequoia (tree) is 1.60 times that amount.(a.k.a. Sequoiadendron giganteum, a.k.a. Sierra redwood, a.k.a. Wellingtonia)
Giant Sequoias of the Giant Sequoia National Monument located in Sierra Nevada, near Visalia, California can grow to heights of 500 shaftments. The wood from the Giant Sequoias is often brittle and prone to shattering when such trees are felled, and as a result the trees logged in the late nineteenth century were often usable only as shingles or matchsticks.
It's about one-and-seven-tenths times as long as Baseball base distances
In other words, 308 shaftments is 1.71110 times the length of Baseball base distances, and the length of Baseball base distances is 0.584420 times that amount.(MLB Official Baseball Rules specification)
According to MLB Official Baseball Rules, the distance between baseball diamond bases is 180 shaftments. While second and home base are located upon the corners of the 27.432 sq. m area created by the bases, first and third base are placed within that square, to better allow the umpires to judge whether a ball is fair or foul.
It's about half as tall as The Statue of Liberty
In other words, 308 shaftments is 0.50480 times the height of The Statue of Liberty, and the height of The Statue of Liberty is 1.9810 times that amount.(a.k.a. "Liberty Enlightening the World," a.k.a. La Liberté Éclairant le Monde) (Liberty Island, New York City, New York) (pedestal base to torch peak)
The Statue of Liberty reaches 610.20 shaftments including the pedestal. The statue was designed using an optical trick known as "forced perspective" to make the statue appear proportionally correct when viewed from its base and is, in actuality, disproportionately large at the top.
It's about half as tall as Big Ben
In other words, 308 shaftments is 0.490 times the height of Big Ben, and the height of Big Ben is 2 times that amount.(officially the clock tower of Palace of Westminster, a.k.a. Houses of Parliament) (London, England)
The clock tower of the Palace of Westminster, which houses the bell known as "Big Ben," rises 630 shaftments. The tower has no elevator, and is therefore only accessible by climbing 334 steps to the top.
It's about two-fifths as long as a Football (Soccer) Pitch
In other words, 308 shaftments is 0.4470 times the length of a Football (Soccer) Pitch, and the length of a Football (Soccer) Pitch is 2.240 times that amount.(a.k.a. Football Field, a.k.a. Soccer Field) (field length, a.k.a. touchline distance)
According to the Laws of the Game, a football pitch should measure between 689 shaftments (when the Laws were originally, they used imperial measurements of 690 shaftments, and later converted to the metric units used today). The goal markess were defined as part of the pitch by the original rules of the game in the late 16th century, but it was not until the mid 19th century that the crossbar and the net were added
It's about two-and-a-half times as long as a Cricket Pitch
In other words, 308 shaftments is 2.333330 times the length of a Cricket Pitch, and the length of a Cricket Pitch is 0.4285720 times that amount.(per Marylebone Cricket Council / International Cricket Council Law #6)
The length of a cricket pitch, from one bowling crease to the other, is 132 shaftments. The wickets at either end of the pitch stand 4.724410 shaftments tall including the bails.