Spi 91-346-7 Parallel Feeler Gage Set 14 Piece Metric

Product Description

The SPI 91-346-7 is a 14-piece parallel feeler gage set designed for precision gap measurement in metric applications. Each leaf is manufactured from tempered steel, providing durability and resistance to wear under repeated use. The set covers a measurement range of 0.03 to 0.50mm across 14 individual leaves, making it suitable for a wide variety of clearance checks encountered in mechanical service work. At 12 inches in length and 0.5 inches wide, the leaves are sized for access in typical industrial and field service environments. Machinists, millwrights, and HVAC technicians reach for this type of tool when checking bearing clearances, valve lash, and component fits.

This feeler gage set is used across residential and commercial maintenance settings wherever precise gap or clearance measurements are required. Typical applications include checking spark plug gaps, valve clearances, bearing fits, and machinery alignment tolerances. The parallel leaf style ensures consistent width from tip to handle, which is preferred when measuring in confined spaces where a tapered blade might produce inconsistent readings. The metric range makes it appropriate for equipment manufactured to metric tolerances.

Key Features

• 14 parallel leaves covering 0.03, 0.04, 0.05, 0.06, 0.08, 0.10, 0.15, 0.20, 0.25, 0.30, 0.35, 0.40, 0.45, and 0.50mm
• Tempered steel construction for durability and resistance to deformation
• Parallel leaf style delivers consistent width measurement along the full blade length
• 12-inch leaf length with 0.5-inch width for reach and versatility
• Metric type set suited for equipment built to metric specifications
• Compact closed length of 12 inches for storage and portability

Compatibility

Designed as a general-purpose metric feeler gage set suitable for use in mechanical, HVAC, plumbing, and industrial service applications requiring gap measurements in the 0.03 to 0.50mm range.

Installation Notes

Feeler gages require no installation but should be handled and stored carefully to prevent bending or corrosion of the leaves. Clean leaves before and after use to remove debris, oils, or contaminants that could affect measurement accuracy. Do not force a leaf into a gap narrower than its rated thickness, as this can permanently deform the blade. Store the set in its closed position to protect the leaves from damage.