It's about one-third as long as a Grain of Sand
In other words, 0.426750 milimeters is 0.3410 times the length of a Grain of Sand, and the length of a Grain of Sand is 2.930 times that amount.(medium grain)
Composed mainly of quartz, mica, feldspar, or magnetite, a grain of sand measures an average of 1.25 mm. In 2007, a team of seven in Myrtle Beach created the world's tallest sandcastle, which measured 15,100 milimeters in height.
It's about one-fourth as long as a Strand of Spaghetti (thickness)
In other words, 0.426750 milimeters is 0.250 times the length of a Strand of Spaghetti (thickness), and the length of a Strand of Spaghetti (thickness) is 4 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 1.7 mm 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 four times as tall as a sheet of Paper
It's about four-and-a-half times as long as a Strand of Hair
It's about four-and-a-half times as tall as a Human hair, Strand of
It's about one-thirty-fifth as long as an Aspirin
In other words, the length of an Aspirin is 33 times 0.426750 milimeters.(for up & up aspirin, 325mg, regular strength tablets) (a.k.a. acetylsalicylic acid, a.k.a. ASA)
A single aspirin tablet measures 14 mm 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 55 times as long as a Red Blood Cell
In other words, the length of a Red Blood Cell is 0.018 times 0.426750 milimeters.(a.k.a. RBCs, a.k.a. haematids, a.k.a. erythrocyte, a.k.a. erythroid cells, a.k.a. red blood corpuscles)
An average Red Blood Cell measures 7.5 µm (micrometers) in diameter. An average human has 20 - 30 trillion red blood cells in their body and each cell completes a circulatory lap in about 20 seconds.