It's small (about 2-4mm long, 1mm thick) normally pale beige and fluted.
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.
Honey, just look for the little tick mark that says "4" on that ruler of yours. It's not rocket science, just a tiny line on a piece of plastic or metal. If you can't find it, maybe it's time to invest in some reading glasses.
25mm - 4mm thick150mm -4mm thick50mm - 4mm thick
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.
50 mm dia gi pipe 4mm thick
A 4mm diamond measures 4mm in at least one measurement.
Most omega enhancers will fit on a 2.5mm regular -- 4mm reversible omega chain.
4mm its in the question
As wide as 4mm on a ruler
4mm is 0.15748032 of an inch.