2 Hydrometer Instrument Specific Gravity Scales. 60/60 F.   FREE SHIPPING in a very well padded and packed box.

We found these in a tool box with many other items from the 1950s so we assume that they too are dated from or before 1960. Measures 6 1/2 inches.

Other Markings: 23620
Condition: Fine. No scratches, cracks, and totally intact. No visual issues at all.

NOTE: They come in their original boxes which are dirty, dusty, watermarked. No markings on boxes, which are heavily taped together.

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