repair - How (not) to treat the surface of a precision ruler

I made the mistake of leaving my Starrett ruler in a damp, cold workshop and develop a small patch of rust. To compound this mistake, I decided to dip it in rust-remover. As you can see, I turned my

repair - How (not) to treat the surface of a precision ruler

Simply buy Flexible steel rule narrow, stainless, matt finished

Our development team is consistently using rulers and we are constantly destroying rulers. That will now change thanks to the new machined

Indestructible Machined Titanium Precision 6 Inch / 15CM Ruler With D

Understanding Casting Defects: When Is a Casting Returnable?

Notched or non-notched straight-edge — Haze Guitars

Tso MTR-18 Precision System Triangle Set (61-461)

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How can I clean up this old Ruler? Preferably as good possible

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