Proform Parts 66776 Digital Valve Spring Tester 1000lb Capacity

The Proform Parts 66776 is a precision digital valve spring tester designed for professional engine builders and performance enthusiasts. This bench-top tool accurately measures valve spring pressure up to 1000 lbs, ensuring your springs meet exact specifications for optimal engine performance.

Key Features:

• 1000 lb capacity with precise 1 lb (0.5 kg) increment readings
• Digital display with backlighting for easy viewing
• Accommodates springs up to 1.9 inches in diameter and 3 7/8 inches in height
• Billet aluminum construction for durability and accuracy
• Peak hold function captures maximum pressure reading
• Automatic shutoff to preserve battery life
• Dual measurement scales: inches/mm for length, lbs/kg for pressure
• 3 7/8 inch ram travel for comprehensive testing range
• 2 1/4 inch diameter upper anvil and 1.9 inch diameter lower anvil

This digital spring tester eliminates guesswork when checking valve spring pressure at various installed heights, helping you avoid valve float and ensure proper valvetrain control. The peak hold feature allows you to compress the spring and read the maximum pressure achieved, while the backlit display makes readings easy to see in any shop lighting condition.