Australia uses metric paper measurement. Paper and card stocks are graded according to gsm (grams per square metre). A higher gsm means a heavier/thicker stock. Papers are generally 60 to 180gsm, card stocks range from 200gsm up.
Basic Laser Bond (Copy Paper) – 80gsm
Standard Gloss Brochure paper – 150gsm
Common Postcard/Business Card – 300gsm