Functional parts are made of the latest wear-resistant materials. Hollow section aluminum beam reinforced by two stainless steel guides. This system assures perfect guidance and protects the beam against shocks. These Calipers offer many advantages over conventional calipers: Lightness improves measuring results. Measuring pressure control for improved repeatability. All work contact faces are titanium-coated on hardened steel or are solid carbide. Fixed left jaw increases rigidity.

The Fowler Ultra-Light Mark IV uses the newly patented Sylvac Inductive Measuring System which expands on the old capacitive system by providing moisture immunity and increased functionality. Old systems would typically have to dry out if they were exposed to coolants or other shop hazards, but the new system can take spray and exposure to due to it's IP-54 Rating . This eliminates costly downtime and increases measuring productivity.

A wide variety of accessory anvils are available to facilitate special measuring such as grooves, slots, splines and more.