Check the listing for details. Eisco Labs Premium Dynamometer - 5N/ 500G Spring Scale. Condition: New. Listed at 25.99 USD. Premium Dynamometer - 5N/ 500G Spring Scale - Eisco Labs The dynamometer, often referred to as spring scales are very accurate precise springs with excellent linearitySealed spring, cannot be abused, over stretched or tangledMade from clear rigid thick wall acrylic and stainless steel partsUpper section colored according to measurement rangeThe dynamometer can be zeroed quickly and easily Eisco's finest dynamometer offers all metal parts encased in a premium acrylic tube. It's high clarity and internal red cylinder make for easy and accurate measurements with each use. Because the springs are enclosed they will not tangle or lose functionality. You can zero this item with a simple twist of the knob. Internal printing of scales prevents the wearing that other spring scales experience over time. Capacity - 5N / 500g Resolution/Sub-division - 0.1N/10g Product Details Brand Eisco Product Type Dynamometers MPN PH0036PRE Check out my other items.