Four millimeters is very thick in some materials and very thin in others. It depends on what kind of material you are measuring. It is less than a centimeter.
4mm sheet metal falls 24 gauge and 25 gauge. 24 gauge sheet metal is 3.175mm (0.125") thick, and 25 gauge sheet metal is 6.35 (0.25") mm thick.
The weight of 1 square meter of 4mm thick glass is approximately 10.5 kilograms.
25mm - 4mm thick150mm -4mm thick50mm - 4mm thick
It's small (about 2-4mm long, 1mm thick) normally pale beige and fluted.
50 mm dia gi pipe 4mm thick
A 4mm measurement is roughly equivalent to the thickness of a credit card or a standard pencil lead. It’s slightly less than the width of a dime, which is about 1.35mm thick, making 4mm about three times thicker. Additionally, it's similar in size to a small paperclip, providing a tangible reference for its dimension.
A 4mm diamond measures 4mm in at least one measurement.
4mm its in the question
As wide as 4mm on a ruler
4mm is 0.15748032 of an inch.
4mm-6mm in inches = -2
4mm is smaller than 5mm