The Sto-A-Weigh Brass Calibration Weight Set by Ohaus. Made in the United States, this set is intended for use in various medical and laboratory disciplines such as emergency medicine, dermatology, cosmetology, and dentistry, among others. These calibration weights are essential for precise measurements and ensuring accuracy in research and medical applications.  And a vintage brass scale weight set.  What you see in the pictures is exactly what you will get.  Please email me any questions before bidding.  Both could use a good cleaning but otherwise is ok condition.