Spi 40-244-6 Optical Comparator Reticle 1.375 in 10x

Product Description

The SPI 40-244-6 is an optical comparator chart and reticle designed for use with 10x magnification optical comparator systems. The reticle measures 1.375 inches in overall diameter and carries Reticle Number 4. Optical comparators use these precision glass reticles as measurement overlays, allowing technicians and machinists to compare a magnified part profile against a fixed reference grid or pattern. This reticle is suited for dimensional inspection work in machine shops, quality control labs, and manufacturing environments where accurate profile and feature measurement is required.

This reticle is intended for installation in optical comparators operating at 10x magnification. It is a direct-fit replacement or supplemental reticle for compatible comparator stages that accept 1.375-inch diameter reticles. Typical applications include thread form inspection, radius checking, angular measurement, and part profile verification. Machinists, QC inspectors, and metrology technicians are the primary users in both production and job-shop settings.

Key Features

• Designed for use with 10x magnification optical comparators
• Overall diameter of 1.375 inches for compatible comparator stages
• Reticle Number 4 designation for easy chart identification and cataloging
• Functions as a measurement overlay for dimensional and profile inspection
• Sold individually — single-unit packaging

Compatibility

Designed for use with optical comparator systems that accept 1.375-inch diameter reticles and operate at 10x magnification. Verify reticle diameter and magnification rating against your comparator specifications before installation.

Installation Notes

Installation of comparator reticles should be performed by a qualified metrology technician or machinist familiar with the optical comparator system in use. Power down the comparator before accessing the reticle stage. Handle reticles by the outer edge only — fingerprints or contamination on the optical surface will degrade measurement accuracy. Consult the comparator manufacturer's service manual for proper seating and alignment procedures.