Vintage Glass Hydrometer Scientific Tester Specific Gravity Baumé Scale 6.5"

Vintage Glass Hydrometer
Scientific Instrument, Specific Gravity and Baumé Scales
Vintage, Approximately 6.5 Inches

This is a vintage glass scientific instrument, identified as a hydrometer, used for measuring the density or specific gravity of liquids. Featuring a weighted bulb and a graduated stem, this piece represents traditional laboratory or industrial testing equipment from the mid-20th century. Such instruments were essential in various fields, including brewing, automotive testing, and chemical manufacturing.

• Dual scale graduated stem featuring Specific Gravity (SP. GR.) and Baumé (BE.) markings
• Hand-blown glass construction with a weighted internal bulb at the top
• Stem marked with "U.S.A." indicating domestic manufacture
• Measures approximately 6.5 inches in total length

Condition: Glass is structurally sound with no chips or cracks. There is some visible internal discoloration or residue trapped within the top weighted bulb area, consistent with age and use. The internal paper scale remains clear and highly legible. The exterior glass surface is clean with no significant scratches or cloudiness.