what do you call the sewing paper that the tailor's used?

Question

it's used to take pre-measurement before initial cuting the material. it's like a yellowish brown paper, ba softer and less fragile than your average brown paper bag/sheets.

Answer 1

I think it is pattern paper. See if this looks like what you want: http://sewtrue.com/shopping/index.php/page/product/product_id/231/product_file/Tagboard_Pattern_Paper.html Some pattern-makers also use brown kraft paper, which is also strong and it's easier to find at art aand craft stores.