The Ohaus metric, stainless steel calibration weight set meets International Organization of Legal Metrology (OIML) Class E2 specifications and designed for calibrating other weights, or electronic balances and scales (set of 25). The weight is constructed of stainless steel for stability, resistance to corrosion, and low magnetic susceptibility. The set includes two each of 200g, 20g, 2g, 200mg, 20mg, and 2mg weights, one each of 1kg, 500g, 100g, 50g, 10g, 5g, 1g, 500mg, 100mg, 50mg, 10mg, 5mg, and 1mg weights, tweezers, and a hinged box with foam packaging for each weight. The weight meets OIML R111 Class E2 standards for use as a reference standard calibrating other weights, and calibrating high precision analytical balances with readabilities as low as 0.1mg to 0.01mg.Calibration weights are used to measure the weight or mass of an object using a balance or scale, or to calibrate other weights or instruments. Calibration weights can be certified or uncertified. Certified weights meet strict guidelines for accuracy and can usually be recertified. Certified weights are used in labs where a high degree of accuracy and repeatability is required. Uncertified weights are used where a lower degree of accuracy is required, including student laboratories, rough weighting operations, and measuring force. Hooked and slotted weights are often used to measure pressure, torque, and tensile strength, and to demonstrate basic laws of physics. Calibration weights differ from lab weights, which are general purpose weights used to hold an object in place, similar to a paperweight. Science education products incorporate applied math and science principles into classroom projects. Teachers in pre-K, elementary, and secondary classrooms use science education kits and products alongside science, technology, engineering, and math (STEM) curriculum to demonstrate STEM concepts and real-world applications through hands-on activities. Science education projects include a broad range of activities, such as practical experiments in engineering, aeronautics, robotics, energy, chemistry, physics, biology, and geology.Ohaus manufactures scales and balances for laboratory, educational, retail, food, and jewelry applications. The company, founded in 1914, is headquartered in Parsippany, NJ. What’s in the Box?1kg500g200g (2)100g 50g 20g (2)10g 5g 2g (2) 1g 500mg 200mg (2) 100mg 50mg 20mg (2) 10mg 5mg 2mg (2)1mgTweezers Covered storage box
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