These unique micro rulers may be used directly under a microscope or magnifier. Speedy measuring of small parts, grooves, slots, line widths, holes, chamfers, etc. Precision fabricated from stainless steel. Micro rulers are spot-welded to bendable shank (plated metal – magnetic) Micro ruler blades are non-magnetic stainless steel. Hexagonal shaped handles prevent these micro rulers from rolling off your workstation. Handles are non-magnetic, gold anodized aluminum. Each micro ruler is individually packaged in a plastic box. Overall length: 83mm (3.25″)