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Yesterday, I picked up this 24" rule at an estate sale. As evidenced from the photos, the rusting was significant. I bought it on a lark (I only paid $1.50) in hopes that I could restore it - if not for use, at least to determine its manufacturer (hoping for a Starrett, or perhaps a Lufkin). After a 6-hour soak in Evaporust, a gentle scour with a fine-grade aluminum oxide pad, and then a scrub clean with Dawn, I gave it a buff with 3-in-One oil and 4/0 steel wool and finally with some Johnson Paste Wax.
Resulting revelation: a clean, clear, functionally-readable L.S.S. Starrett No. 607 Spring-Tempered Steel Rule with No. 7 graduation (16ths, 32nds, 64ths, and 100ths), dating to as early as 1938 (according to available catalogs) when, for the first time the No. 607 was offered in 24-inch length. Starrett discontinued the No. 607 in October 2025.
Length: 24"
Depth: 3/64"
Width: 1-1/4"
Weight: 5.6 oz