The General Tools & Instruments Vernier Caliper is constructed with inside and outside jaws and full depth gauge that ensures an enduring life. It has a lock for easy repetitive measurement. The friction roller adjustment and slide lock for gaging are some of the other features that facilitate easy operation.Features Smooth-action thumb roller for retracting the slide with greater accuracy Frame lock for taking repetitive measurements Specifications Weight: 0.24 lb Type: Vernier Caliper Quantity: 1 Length: 12.5" Application: Tools and Home Improvement