| Time Period Manufactured | Pre-1930 |
|---|---|
| Country of Origin | United States |
| Maker | Union Gravity Level Co. |
Check the listing for details. Antique 28" Union Gravity Level Co Inclinometer Patent 1923, Sioux City, Iowa. Made in United States. Listed at 375.00 USD. However, the actual production model suspended the rotating pointers through a central brass disc on which the scales are engraved. Patent date of September, 1923 on the brass dial faces on either side.
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