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Antique L.S. Starrett No. 64 lever-type test indicator with the early \"The L.S.S. Co. Athol, Mass. U.S.A.\" marking — the three-letter \"L.S.S.\" abbreviation Starrett used in its earliest catalog era, dating this piece to roughly pre-1920.
- Marked: \"The L.S.S. Co. Athol, Mass. U.S.A. No. 64\" on the T-shaped head
- Lever-type test indicator — predecessor pattern to Starrett\'s later \"Last Word\" series
- Graduated scale reading 5 increments either side of zero on the head
- Ball-end contact stylus on the lever arm
- Knurled tension adjustment and pivot still move smoothly
- All original components present — see photos for both pieces
- Original red Starrett box included (unlabeled exterior, typical of early Starrett packaging); box shows expected age wear with edge scuffing and corner fraying
Lever-type test indicators are still used today by machinists to check runout, parallelism, and surface deviation on a mill or lathe. The lever pivots on contact and the deflection registers against the graduated scale.
Antique pre-1920 Starrett pieces with the L.S.S. Co. marking are a distinct collector category — meaningfully more sought-after than the more common mid-century USA-stamped pieces. A complete example with the original box is the configuration collectors want.
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