Antique Wooden Cased Trigonometer Drafting Tool
Updated August 28, 2026
| Lot number | 1074 |
| Estimate | $200 - $10,000 |
| Opening bid | $100 |
| Category | Antiques & Furniture |
| Auction | Inventions and Technology Auction |
| Date | September 26, 2026 at 9:00 AM CDT |
| Auction house | Donley Auctions |
| Location | Union, Illinois |
Housed in its original mahogany case, this late 19th or early 20th-century precision drafting instrument is an ...
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