Disclaimer

Last updated: 2026-08-26

Object Index 0071234 explains the names, parts, and design of everyday objects for general information. It is not engineering advice, repair guidance, or certification.

Safety. Anything involving electricity, load-bearing structures, sharp tools, food safety, or hazardous materials should be handled according to the manufacturer's instructions and applicable regulations. When in doubt, consult a qualified professional. Reading about a mechanism is not a substitute for manufacturer guidance.

Accuracy. We cite sources and review facts on a published schedule, but information can be wrong or out of date. If you find an error, please report it through the contact page.

No professional advice. Nothing on this site constitutes medical, legal, financial, or other professional advice.