InvoSpline’s policy of using only the highest quality steel available, along with our own 100% inspection procedures has made us the nation’s leader in ultra-precision master gears and spline gages.  

InvoSpline has been in business for over 65 years.

We specialize in:
• Spur & Helical Master Gears with helix up to 45 Degrees
• Solid-Type and Spline & Serration Gauges Internal and External Checking
• Indicator type ring and plug Gages to .0001″ (hand held & fixture style)
• Precision Gear Grinding
• Prototype Gears & Spline Parts Small Lots
• Spline Arbors
• Concentricity Spline Rings & Arbors
• True Position Spline Fixtures