Starrett 121CZ 124 Series long range tubular inside micrometer with 32-107" measuring range and 0.001" graduations. Steel construction with nickel-plated and satin chrome finish, adjustable anvil, and accuracy of +0.0004, -0.0000 in for precise internal measurements.

Starrett 121 tubular inside micrometers are designed for large internal measurements beyond the capacity of most other micrometers. Each set consists of a micrometer head mounted at the end of a tubular holder in which measuring rods can be inserted and adjusted to the desired size. Final size reading in thousandths of an inch (.001") is obtained using the micrometer head. With 3 Graduated Measuring Rods & 2 Extension Rods 32"-107", 3 Graduated Measuring Rods, 2 Extension Rods, Case With 3 Graduated Measuring Rods & 2 Extension Rods.

Features

• Consists of a micrometer head mounted at the end of a tubular holder
• Rod anvils are adjustable
• Quick and easy adjustment
• Rods and holder are made of rigid, steel tubing
• Hardened and ground anvils
• Insulated rod holder to eliminate expansion by heat when hand held
• Satin chrome finish on micrometer head reading surfaces
• Rods are accurately graduated in inches - micrometer head in thousandths of an inch