Mitutoyo 184-304S Feeler Gage Set 20 Leaf Parallel

Product Description

The MITUTOYO 184-304S is a parallel-leaf feeler gage set used to measure clearances, gaps, and tolerances in mechanical assemblies. Each set contains 20 stainless steel leaves with parallel edges, making it suitable for consistent, repeatable gap measurement across a blade's full length. Individual leaves measure 1 mm thick, 13 mm wide, and 150 mm long. The stainless steel construction resists corrosion and withstands shop environments where oils, coolants, and humidity are present. Machinists, millwrights, engine rebuilders, and HVAC technicians use feeler gages for valve clearance checks, bearing fits, and component alignment verification.

This feeler gage set is suited for both production and field service applications where precise gap measurement is required. The 150 mm blade length accommodates a range of access conditions, and the 13 mm blade width provides a stable contact surface. Parallel leaf geometry ensures uniform thickness along the entire blade, which is critical when checking flat mating surfaces or verifying consistent clearances across a joint. The set is packaged individually and ships as a single unit.

Key Features

• 20 parallel stainless steel leaves per set
• Each blade measures 1 mm thick, 13 mm wide, and 150 mm long
• Parallel leaf style provides uniform thickness along the full blade length
• Stainless steel construction resists corrosion in wet or oily environments
• Suitable for valve clearance checks, bearing fits, and alignment verification

Compatibility

Designed as a general-purpose parallel-leaf feeler gage set for use in mechanical, HVAC, and industrial maintenance applications where precise gap measurement to blade specifications is required.

Installation Notes

Feeler gages require no installation but should be handled and stored carefully to prevent blade damage or contamination that can affect measurement accuracy. Clean blades before use to remove oil or debris that could introduce measurement error. Do not force blades into tight clearances, as bending or kinking a leaf will render it inaccurate. Inspect each blade periodically for nicks, burrs, or deformation, and replace the set if any leaf shows visible damage.