It's about half as long as a Grain of Sand.
In other words, 654 microns is 0.5230 times the length of a Grain of Sand, and the length of a Grain of Sand is 1.910 times that amount.(medium grain)
Composed mainly of quartz, mica, feldspar, or magnetite, a grain of sand measures an average of 1,250 microns. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 15,100,000 microns in height.
It's about two-fifths as long as a Strand of Spaghetti (thickness).
In other words, 654 microns is 0.380 times the length of a Strand of Spaghetti (thickness), and the length of a Strand of Spaghetti (thickness) is 2.60 times that amount.(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 1,700 microns 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 six-and-a-half times as long as a Strand of Hair.
It's about six-and-a-half times as tall as a Human hair, Strand of.
It's about seven times as tall as a sheet of Paper.
It's about one-twentieth as long as an Aspirin.
In other words, the length of an Aspirin is 21 times 654 microns.(for up & up aspirin, 325mg, regular strength tablets) (a.k.a. acetylsalicylic acid, a.k.a. ASA)
A single aspirin tablet measures 14,000 microns 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-eighty-fifth as tall as a Golf Tee.
In other words, the height of a Golf Tee is 83 times 654 microns.The most common golf tee size and the length preferred for iron and most wood clubs is 54,000 microns 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."