Carbide Gages

• Great Lakes Eglinton
• R.L. Schmitt Co.

Cylindrical Rings

• Glastonbury Southern Gage
• Mid-Tech Gage
• Vermont Gage

Master Setting Discs

• Hemco Gage
• Mid-Tech Gage
• Vermont Gage

Pin Gages

• Meyer Gage
• Van Keuren (PMC Lone Star)
• Vermont Gage

Spline Gages

• Invo Spline
• Michigan Spline
• Reska Spline

Thread Plugs, Rings, and Wires

• Alameda
• Gage Assembly
• Glastonbury Southern Gage
• Hemco Gage
• Thread Check Inc.
• Vermont Gage
• Van Keuren (PMC Lone Star)