Profile: Mark V Laboratory, Inc. is a manufacturer and distributor of metallographic abrasive discs & wheels for grinding & polishing, available with lapping films for greater uniformity of backing, waterproof protection, greater resistance to solvents and tearing. Our options include magna disc system, flex diamond discs available in various sizes & metal bonded diamond discs available in various configurations. Our metallurgical equipment includes metallurgical microscopes, video inspection & measuring, PC capture & camera systems, film & microscope accessories, illuminators & bulbs and hardness testers.