Spi 98-340-3 Zero Setter 1 Inch Oah Precision Mechanical

Product Description

The SPI 98-340-3 is a precision mechanical zero setter designed for accurate zero-setting of dial indicators and comparators in metrology and machining applications. Standing 1 inch overall height and 1.45 inches overall width, this compact tool delivers an accuracy of 0.0004 inches and repeatability of 0.0004 inches, making it suitable for demanding inspection and setup tasks. A graduation of 0.0005 inches provides fine resolution for close-tolerance work. The unit includes an indicator and ships with a protective case. It is a non-magnetic design, which keeps it compatible with a wide range of workpiece materials and setups. Machinists, quality control technicians, and tool room professionals use this type of zero setter to establish reliable reference points before performing dimensional checks.

The SPI 98-340-3 is used in tool rooms, machine shops, and quality inspection environments where consistent zero-referencing is required. Its compact footprint suits bench-top comparator stands and surface plate setups. The included indicator means the unit is ready to use out of the box without sourcing a separate gauge. This product is suited for professionals performing incoming inspection, in-process checks, or final part verification where precise mechanical zero-setting is a standard workflow step.

Key Features

• Accuracy of 0.0004 inches for reliable close-tolerance zero-setting
• Repeatability of 0.0004 inches ensures consistent results across multiple setups
• Graduation of 0.0005 inches for fine resolution readings
• Includes indicator and protective case for complete out-of-box use
• Non-magnetic construction broadens compatibility with various workpiece materials
• Easy-reading dial with positive alignment and safeguard against damage from over-run

Compatibility

Designed as an OEM-style precision zero setter suitable for use with standard dial indicators and comparators in bench-top inspection and machine shop applications.

Installation Notes

Setup and use should be performed by a qualified machinist or metrology technician familiar with precision measuring equipment. Before use, ensure the reference surface is clean and free of debris to maintain accuracy. Handle the instrument carefully to avoid shock or impact, which can affect calibration. Store in the included case when not in use to protect the mechanism from contamination and damage.