PROFORM BB1903 Calibrated Test Spring, Light, 10–190 lb

The PROFORM BB1903 Calibrated Test Spring is designed for accurate calibration and testing applications requiring a light spring rated from 10 to 190 pounds. Its calibrated performance helps support consistent results when verifying equipment operation, adjusting spring-loaded components, or performing workshop and laboratory testing.
Constructed from durable steel, this test spring delivers dependable strength and repeatable response during regular use. The natural steel finish provides a practical, professional appearance while maintaining the straightforward functionality expected from PROFORM calibration components. Part number BB1903 identifies the spring for reliable product matching and replacement.
This calibrated test spring is supplied individually and is suitable for applications where controlled spring tension is required. Its light-duty range makes it a useful choice for technicians, builders, and equipment specialists who need a clearly rated spring for testing, setup, and calibration work. The PROFORM BB1903 is not air restricted and does not require truck freight shipping.

Features:

• Brand: PROFORM

• Part Number: BB1903

• Application: Calibrated testing and equipment verification

• Load Range: 10–190 pounds

• Spring Type: Light calibration spring

• Material: Steel

• Finish: Natural

• Quantity: One spring

• Shipping Classification: Not air restricted and not truck freight only