Model No. SWPI: 125 - 133

Avoirdupois weights 1/4 to 4lb

SWPI manufactures Avoirdupois weights under Model No. 125–133, covering a range from ¼ ounce to 4 pounds. The lighter weights—specifically ¼ oz, ½ oz, 1 oz, and 2 oz—are crafted from brass, while the heavier denominations, including 4 oz, 8 oz, 1 lb, 2 lb, and 4 lb, are made of cast iron. These weights are produced according to the buyers specified error limits, ensuring calibration accuracy. SWPI is a prominent exporter of these essential calibration tools, ship-ping them to a wide spectrum of countries globally

These weights serve as standard test weights in the avoirdupois (U.S. customary) system and are used for precise calibration of weighing equipment in both laboratory and industrial contexts. SWPI’s production emphasizes high quality, material suitability, and global reach, offering reliable weights tailored to meet diverse international standards