It's about three-fourths as long as an Aspirin.
In other words, the length of an Aspirin is 1.4 times 0.4 inches.(for up & up aspirin, 325mg, regular strength tablets) (a.k.a. acetylsalicylic acid, a.k.a. ASA)
A single aspirin tablet measures 0.55 inches in diameter. One of the most common medicines in the world and a foundation of worldwide health systems, an estimated 40,000 metric tons of aspirin are consumed each year.
It's about one-fifth as tall as a Golf Tee.
In other words, 0.4 inches is 0.19 times the height of a Golf Tee, and the height of a Golf Tee is 5.3 times that amount.The most common golf tee size and the length preferred for iron and most wood clubs is 2.1 inches tall. The tee did not come into common use until it was promoted by professional golfers Walter Hagen and Joe Kirkwood, as part of a marketing effort by the patent-holder of the well-known, "Reddy Tee."
It's about six times as long as a Strand of Spaghetti (thickness).
In other words, the length of a Strand of Spaghetti (thickness) is 0.17 times 0.4 inches.(average; restaurant and supermarket applications) (based on FMA Omcan Italian Made TR50 Counter Top Pasta Machine Extruder 13317)
An average strand of restaurant-grade spaghetti measures 0.067 inches in thickness. In 2010, a California Buca di Beppo set a world record by preparing a 13,780-lb bowl of spaghetti, served in a swimming pool.
It's about eight times as long as a Grain of Sand.
In other words, 0.4 inches is 8.13 times the length of a Grain of Sand, and the length of a Grain of Sand is 0.123 times that amount.(medium grain)
Composed mainly of quartz, mica, feldspar, or magnetite, a grain of sand measures an average of 0.0492 inches. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 594 inches in height.
It's about one-thirty-fifth as tall as a Bowling Pin.
In other words, the height of a Bowling Pin is 37.5 times 0.4 inches.(USBC specifications; tenpin)
According to the United States Bowling Congress specifications, a tenpin bowling pin should be within 0.0313 inches of 15 inches in height. The USBC further mandates that certified pins be made of sugar maple wood, unless otherwise approved by the organization.
It's about one-sixty-fifth as long as a Woman's Footstep.
In other words, the length of a Woman's Footstep is 67 times 0.4 inches.(for healthy, middle-aged woman of average height; single step length)
According to studies by The University of Oklahoma's Health Sciences Center, the average length of a woman's step is 26 inches, for an average stride (two-step's length) of 52 inches. The average person walks at a speed of about 1.3 m/s
It's about one-seventy-fifth as long as a Man's Footstep.
In other words, the length of a Man's Footstep is 77 times 0.4 inches.(for healthy, middle-aged man of average height; single step length)
According to studies by The University of Oklahoma's Health Sciences Center, the average length of a man's step is 31 inches, for an average stride (two-step's length) of 62 inches. The average person walks at a speed of about 1.3 m/s