Starrett 66TS Feeler Gage Set 26-leaf Tapered Stainless

Product Description

The STARRETT 66TS is a 26-leaf tapered feeler gage set built for precision gap measurement in HVAC, automotive, and general mechanical service work. Each leaf is stainless steel construction, providing corrosion resistance and long-term dimensional stability. The set covers a thickness range from 0.0010 inch up to 0.0250 inch, giving technicians a broad selection in a single compact set. Leaves are 3-1/32 inches long and 1/2 inch wide, and the tapered profile allows easy insertion into tight clearances. Total set weight is 0.2 pounds, making it easy to carry in a service kit.

This feeler gage set is used across residential and commercial service applications wherever precise gap or clearance checks are required. Common tasks include checking valve clearances, setting igniter gaps on gas-fired equipment, verifying bearing clearances, and inspecting contact points. The tapered leaf design makes it well suited for confined spaces where a parallel-leaf gage would be difficult to seat properly. Licensed HVAC technicians, plumbers, and mechanical service professionals keep sets like this on hand for routine commissioning and diagnostic work.

Key Features

• 26 stainless steel tapered leaves in a single set
• Thickness range: 0.0010 inch to 0.0250 inch with intermediate steps at 0.0015, 0.0020, 0.0025, and 0.0030 inch
• Tapered leaf profile for access in tight clearance spaces
• Leaf length of 3-1/32 inches and width of 1/2 inch
• Stainless steel material resists corrosion and holds calibration in field conditions
• Compact and lightweight at 0.2 pounds for easy inclusion in a service bag

Compatibility

Designed as a general-purpose feeler gage set suitable for gap and clearance measurement tasks across HVAC, plumbing, and mechanical service applications where leaf dimensions and thickness range are appropriate for the job.

Installation Notes

Feeler gages require no installation, but proper use practice applies. Select a leaf or combination of leaves that produces a slight drag when drawn through the gap being measured. Never force a leaf into a gap, as this can bend or kink the blade and affect accuracy. Clean leaves after each use and inspect for nicks or deformation before relying on them for precision measurement. Store the set folded and closed to protect the leaves from damage.