This is an unusual little old tool and comes in its original box. It's a Moore and Wright 50 mm engineer's precision ground steel rule square and has blind riveted construction made from hardened and tempered blades to B.S. 939 and DIN 875 standards. It's two inches long on the inside of the upper blade. It's a bit tarnished. This vintage boxed Moorite precision right angle is bound to be a bargain for one keen bidder and will be carefully packed for the second class post. Please have a look at other items, from a pet and smoke free environment, I have listed. Combined postage is very welcome and each question will receive a prompt reply.