US Patent: 1,000,512


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Leveling Instrument
Line Level

Patentee:

Irving L. Griswold (exact or similar names) - Chicago, IL

USPTO Classifications:

Tool Categories:

Assignees:

None

Manufacturer:

Not known to have been produced

Witnesses:

Patent Pictures:

Description:

This line level is designed to improve accuracy by its being light-weight and spanning a longer section of line.