Outside Calipers Inside Calipers Caliper Tool - Rusty I found this while cleaning my house. There is rust due to aging. I did an image search online and found out it's a measuring instrument. Is it possible to use it? I think it would also be good as retro decor. Since it's old, it may not be usable, so please understand this before purchasing. Engraving Measuring Instrument Measuring Instrument, Stainless Steel Measuring Tool for Measuring Inside and Outside Dimensions Measuring Tool Silver It will be shipped via Nekopos or Yu-packet. Please comment if you have any questions.