12" Inside Caliper - General Tools & Instruments

The General Tools & Instruments 454-12 12" Inside Caliper is a robust precision instrument engineered for professional technicians and mechanics requiring accurate internal diameter measurements. This durable tool provides reliable gauging of an opening's inner dimensions, allowing for precise transfer of measurements for documentation or layout tasks. Its professional-grade construction ensures consistent performance in demanding automotive and industrial settings.

Key Features

• Precision Internal Measurement: Designed for accurately gauging the inner diameter of various openings, bores, and grooves.
• Durable Forged Steel Construction: Features forged steel legs, crafted from special caliper steel, with hardened measurement points for extended tool life and consistent accuracy in demanding environments.
• Stable and Repeatable Readings: Hardened and tempered bow springs, combined with fulcrum spools, provide uniform tension without side play, ensuring stable and repeatable measurements.
• Efficient Adjustments: An adjusting screw with a self-seating washer and nut allows for quick and positive adjustments during use, enhancing workflow efficiency.
• Government Standard Compliance: Conforms to government specifications GGG-C-95, assuring its quality and reliability for professional applications.

Applications

This 12" Inside Caliper is an essential tool across various professional settings where accurate internal dimensions are critical. In the automotive industry, it is vital for tasks such as precisely measuring the internal diameter of brake drums, cylinder bores, valve seats, and other critical engine components to ensure proper fit and operational integrity. For industrial applications, it is widely used in manufacturing for quality control, assessing the internal dimensions of machined parts, pipes, bores, and holes, as well as checking the width of grooves and slots. Engineers and machinists utilize it for verifying designs and ensuring components meet exact specifications in metalworking and general fabrication.

Specifications

• Jaw Capacity: 12 inches
• Leg Length: 12-5/16 inches