👉 Initialism of grams per square metre (unit for measuring the weight of paper)
Alright class, settle down and let’s take a look! You’ve stumbled upon a little code, you see, A short way to say something – that's G.S.M., agree? It stands for G rams P er S quare M eter, it’s true, A measurement of paper, light and new! Think about a sheet, so thin and neat, How much weight does it have, bittersweet? That's what G.S.M. tells us, clear and bright, A measure of density, shining like a light! Does anyone want to try a little rhyme? To help remember this measurement’s prime! So there you have it – G.S.M. explained with glee, Any questions before we move on, you see?