The Starrett Carbon Fiber Caliper offers carbon fiber construction that significantly reduces weight, improving maneuverability. Titanium coated stainless steel outside meansurements jaws for long life and superior flatness. It offers data transmission capability, two preset modes, and a hold feature. This model provides 0-40" measuring range and .0005" resolution. 0-40” (0-1000mm) Outside Range; 0.787-40” (20-1000mm) Inside Range (w/top pins).