Grip 30184 300mm Heavy Duty Combination Square by Grip $15.00 1 2 3 4 5 6 7 8 9 10+ Quantity Quantity Add to Cart Buy Now. Pay Later Estimated Dispatch Time: 3-10 days i Contact us for an exact ETA. Subject to availability - T/C's apply Frequently Purchased Together + This item: Grip 30184 300mm Heavy Duty Combination Square $15.00 Price for Selected Items: Add to Cart Product Description Professional quality. Satin chrome finished ruler. Baked enamel finished protractor. Levelled square head. Use as centre head, outside try square, depth gauge, scriber, 90 degree & 45 degree level, inside try square and meter. SPECIFICATIONS: Length - 300mm. Markings for inches, centimetres & millimeters.