Dr. Kolzer-Sprenger Pilot Theodolite
Updated September 23, 2026
This auction ended on September 26, 2026.
See upcoming auctions from Donley Auctions.
| Lot number | 1054 |
| Estimate | $700 - $10,000 |
| Opening bid | $350 |
| Auction | Inventions and Technology Auction |
| Date | September 26, 2026 at 9:00 AM CDT |
| Auction house | Donley Auctions |
| Location | Union, Illinois |
This is a remarkable example of a "broken telescope" style pilot balloon theodolite, designed by Dr. Koelzer and ...
More lots in this auction
- Tamaya & Co. Japanese Transit Level
- Antique C. Baker London Theodolite & Case
- Hildebrand Strassburg Theodolite & Case
- E.R. Watts & Son London Transit Theodolite W/Key
- Bausch & Lomb Model 90 Alidade & Case
- West London Surveying Transit And Case
- Cooke, Troughton & Simms Theodolite W/Case
- 1907 W.F. Stanley Transit Theodolite