Equipment library: Mill-door hinge pin

Observed engineering features

• Machined pins in the workshop showing surfaces and center holes.
• Geometric check with a caliper; the image alone does not establish tolerance acceptance.
• Cylindrical-surface check with a micrometer, documenting the inspection tool.
• Components packed in a wooden crate with individual protection.

Review the manufacturing evidence

Review the linked dossier for annotated photographs and available workshop footage. The library identifies component families; it does not declare machine capacity, certified material or standard interchangeable dimensions.