Inner calipers, inner groove vernier calipers, claw feet Carbon steel double groove inner caliper for measuring bore diameter (9-200mm)

Made of carbon steel, durable and long service life. The ruler is fine grinding processing and laser engraving can provide accurate readings. High precision, the measurement accuracy is 0.03mm This ruler is machining, suitable for measuring the inner diameter of the inner hole Widely used in machining field to measure bore diameter.