Zeroes at any point
The zero button instantly sets unit to zero when jaws are at any position. This permits setting a Floating Zeroâ„?or reference point to read â€œgreater than or less than results with a minus sign displayedâ€?without calculations. Ergonomic design precision calipers are ideal for measuring the outside diameter of stoppers, the inside diameter of tubing, and the depth of vials. Depth bar extends from the end of caliper. Fine adjustment thumb roller improves reading speeds and position-holding lock screw sets length. Easy-to-read jumbo digital display is 1/3-inch-high.
Traceable to NIST for accuracy
No lubrication is ever required on the ultra-smooth slide bar. Runs on the supplied battery for 10,000 hours. Made of durable acid resistant, hardened stainless-steel or strong composite carbon fiber.