Starrett 120B-12 Dial Caliper 0-12" with Long Nib Jaws

The Starrett 120B-12 is a professional-grade dial slide caliper offering a 0–12" measuring range with .001" graduations and a high-contrast white dial face. Designed for mechanics and toolmakers who demand accuracy, this American-made caliper delivers direct, easy-to-read measurements without the ambiguity of vernier-style tools.

The defining feature of the 120B-12 is its long nib jaws — 3" (75mm) — which provide superior access to recessed areas and make it ideal for heavy-duty use in situations where conventional calipers fall short. Strong inside and outside nibs measure from zero for outside measurements and from .300" (8mm) for inside measurements.

Key Features:

• Measuring range: 0–12" with .001" graduations
• Accuracy: +/-.001" (0–6"); +/-.0015" (6–12")
• Long nib jaws: 3" (75mm) for extended reach and heavy-duty use
• Revolution range: .100" | Bar graduations: .100"
• Knife-edge contacts for both inside and outside measurements
• Hardened stainless steel bar, measuring surfaces, rack, gears, and depth rod
• Sharp, black graduations on a satin-finished bar for easy reading
• Lock screw for dial bezel and lock screw for holding the sliding jaw in position
• Positive split-gear anti-backlash control for reliable readings
• One-hand operation via thumb-operated fine adjustment roll
• White dial face for high-contrast readability
• Made in the USA

The Starrett 120B-12 is the tool of choice for professionals requiring dependable precision measurement across a wide range. Its robust hardened stainless steel construction ensures long-term durability in demanding shop environments.