- Nema Enclosure Types courtesy of nema.org
- Ingress Protection (IP Code Chart)
- Truck Scale Foundations courtesy of Rice Lake Weighing Systems.
- Intrinsic / Hazardous Environments.
- Weight Tolerance & Conversion Charts courtesy of Rice Lake Weighing Systems.
- Load Cell Resource Center courtesy of Rice Lake Weighing Systems.
- Load Cells - A History (ISI blog post)
- ISI Document Center (links to Measurement Canada and ISO accreditation requirements).
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