Spi CMS160809100 Mechanical Depth Micrometer 6 in 6 Rods

Product Description

The SPI CMS160809100 is a mechanical depth micrometer designed for precision depth measurement in machining, toolroom, and quality-control environments. It features a 6-inch maximum measurement range with six interchangeable rotating rods, allowing the technician to span a wide variety of bore and slot depths without switching instruments. Graduation is 0.0001 inches with an accuracy of 0.0002 inches, making it suitable for close-tolerance inspection work. A ratchet stop thimble provides consistent measuring pressure to eliminate operator-to-operator variation. The instrument ships NIST certified with a short-form certificate of calibration included.

This depth micrometer is used on the shop floor and in inspection rooms for measuring the depth of slots, holes, counterbores, and recesses in metal, plastic, and composite workpieces. The 4-inch base length provides stable seating across wide surfaces. The digital counter feature aids readability during repeated measurements. Machinists, tool-and-die makers, and quality technicians are the typical end users. It is equally applicable in job-shop and production environments where traceable calibration records are required.

Key Features

• 6-inch measurement range with 6 interchangeable rotating rods for versatile depth measurement
• 0.0001-inch graduation with 0.0002-inch accuracy for high-precision inspection
• Ratchet stop thimble ensures consistent, repeatable measuring force
• 4-inch base length for stable contact across wide workpiece surfaces
• Hardened steel measuring faces for wear resistance in production use
• NIST-certified calibration with short-form certificate of calibration included
• Digital counter for easy reading during repetitive measurement tasks

Compatibility

Designed as a general-purpose mechanical depth micrometer suitable for standard depth measurement applications in machining, toolroom, and quality-assurance settings where a 6-inch range and NIST-traceable calibration are required.

Installation Notes

This instrument should be handled and stored in its included protective case to preserve calibration integrity. Before use, verify the zero setting with all rods removed and the base seated flat on a reference surface. Avoid dropping or impacting the micrometer, as shock can alter calibration. Periodic recalibration by a qualified metrology technician is recommended to maintain NIST traceability.