| Concise |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Mar-2008 |
| CONCISE CIRCULAR SLIDE RULE | $56.00 | 18-Mar-2008 | 14 |
| Concise Circular Slide Rule #28 Pickands Mathe | $28.34 | 25-Mar-2008 | 8 |
| SIC / Concise Model 300-B Circular Slide Rule | $26.00 | 18-Mar-2008 | 9 |
| "Vintage CONCISE 260 CAT/Caterpillar Round Sli | $25.01 | 19-Mar-2008 | 9 |
| CONCISE CIRCULAR SLIDE RULE ADVERTISING SPECIA | $23.50 | 16-Mar-2008 | 13 |
| 1968 Litton Hewitt Robins Concise Circular Sli | $22.48 | 24-Mar-2008 | 5 |
| Vintage 1968 Concise Circular Slide Rule - Jap | $21.10 | 08-Mar-2008 | 8 |
| CIRCULAR LOCKHEED SLIDE RULE~CONCISE RULER | $20.50 | 10-Mar-2008 | 6 |
| Concise Model 600 Circular Slide Rule | $20.26 | 30-Mar-2008 | 4 |
| CONCISE 260 CIRCULAR SLIDE RULE - WITH PLASTIC | $19.99 | 23-Mar-2008 | 1 |
| Circular CONCISE Slide Rule - Made in Japan | $19.50 | 25-Mar-2008 | 3 |
| Concise Takeda CTCS-552 Circular Slide Rule | $16.16 | 30-Mar-2008 | 3 |
| VINTAGE ORIGINAL CONCISE ROUND CIRCULAR SLIDE | $15.51 | 10-Mar-2008 | 2 |
| Concise Circular Slide Rule w/case/manual Made | $15.50 | 06-Mar-2008 | 3 |
| CONCISE CIRCULAR SLIDE RULE NO. 28N W/CASE & M | $15.50 | 30-Mar-2008 | 4 |
| 1968 Litton Hewitt Robins Concise Circular Sli | $14.50 | 03-Mar-2008 | 3 |
| CONCISE CIRCULAR SLIDE RULE No. 28 THE WILD CO | $13.50 | 23-Mar-2008 | 2 |
| Concise Circular Slide Rule - Boeing logo | $9.50 | 30-Mar-2008 | 2 |
| Vintage Antique Concise Circular Sliderule New | $9.50 | 01-Mar-2008 | 3 |
| Concise Circular Slide Rule type-E w/case/manu | $8.50 | 26-Mar-2008 | 2 |
| Slide Rule by Concise-Japan_Map measure-nautic | $6.00 | 30-Mar-2008 | 2 |
| NEW Sama Etani Concise circular Slide Rule Mod | $59.95 | 08-Mar-2008 | 0 |
| NEW Sama Etani Concise circular Slide Rule Mod | $59.95 | 15-Mar-2008 | 0 |
| NEW Sama Etani Concise circular Slide Rule Mod | $59.95 | 30-Mar-2008 | 0 |
| NEW Sama Etani Concise circular Slide Rule Mod | $59.95 | 23-Mar-2008 | 0 |
| Sama Etani Concise circular Slide Rule | $39.99 | 29-Mar-2008 | 0 |
| Concise Circular Slide Rule type-E w/case/manu | $9.99 | 06-Mar-2008 | 0 |
| Circular Slide Ruler Concise No. 28N Holiday I | $8.99 | 15-Mar-2008 | 0 |
| Circular Slide Ruler Concise No. 28N | $6.99 | 29-Mar-2008 | 0 |