The Wensar Standard Weight – F1 Class offers OIML R111-certified accuracy for high-precision balance calibration. Constructed from mirror-polished 304 SS with < 0.05 magnetic susceptibility and a durable knob design, these weights (1 mg to 20 kg) deliver reliable performance. Available individually or in kits, each unit can be supplied with a NABL-accredited calibration certificate, ensuring traceability and compliance for top-loading, analytical, and precision scales.