It's about four-fifths as tall as a sheet of Paper
In other words, 75 microns is 0.8 times the height of a sheet of Paper, and the height of a sheet of Paper is 1 times that amount.(for US Letter, a.k.a. ANSI A; 215.9mm by 279.4mm (8.5 in x 11 in); 20lb)
A single sheet of 20 lb, 8.5 inch x 11 inch paper is just 100 microns thick. This style of paper weighs a mere 5 g per sheet.
It's about three-fourths as wide as a Strand of Hair
In other words, 75 microns is 0.76 times the width of a Strand of Hair, and the width of a Strand of Hair is 1.3 times that amount.(average)
A strand of human hair averages 99 µm (micrometers), with blond hair being the finest and black hair the thickest. On a healthy scalp, each strand of hair will last up to 6 years.
It's about ten times as long as a Red Blood Cell
In other words, 75 microns is 10 times the length of a Red Blood Cell, and the length of a Red Blood Cell is 0.1 times that amount.(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.
It's about thirteen times as long as a Cell's Nucleus
In other words, 75 microns is 13 times the length of a Cell's Nucleus, and the length of a Cell's Nucleus is 0.08 times that amount.(for animal cell)
The nucleus of an animal cell measures an average of six micrometers. The nucleus is the largest organelle in these cells, accounting for about 10% of the cell's total volume.
It's about one-fifteenth as long as a Grain of Sand
In other words, 75 microns is 0.1 times the length of a Grain of Sand, and the length of a Grain of Sand is 16.7 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 one-twenty-fifth as wide as a Strand of Spaghetti
In other words, 75 microns is 0.04 times the width of a Strand of Spaghetti, and the width of a Strand of Spaghetti is 23 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 forty times as long as a Bacterium
In other words, 75 microns is 38 times the length of a Bacterium, and the length of a Bacterium is 0.03 times that amount.(Escherichia coli) (rod-shaped configuration)
An rod-shaped E. coli bacterium measures about two micrometers in length. A staple of biology labs, E. coli can reproduce in as little as twenty minutes.