| Concise |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Jun-2008 |
| Lot Vintage Circular Concise 28 Slide Rules & | $51.01 | 06-Jun-2008 | 11 |
| "Concise Circular Slide Rule, case, instructio | $36.00 | 02-Jun-2008 | 7 |
| VITNAGE CONCISE CIRCULAR SLIDE RULE W/CASE ROU | $34.33 | 22-Jun-2008 | 6 |
| "3 CONCISE SLIDE RULES 28, 28N, 300 w/sleeves" | $33.67 | 23-Jun-2008 | 8 |
| CONCISE Conversion Tables and Circular Slide R | $32.55 | 17-Jun-2008 | 5 |
| Vintage Concise Circular Slide Rule No. 260 Ca | $28.00 | 19-Jun-2008 | 7 |
| NOS KEY LINE'S CONCISE CIRCULAR SLIDE RULE NO. | $25.49 | 25-Jun-2008 | 4 |
| Concise CIRCULAR SLIDE RULE Takeda adv Crane H | $23.03 | 23-Jun-2008 | 4 |
| VINTAGE CONCISE CIRCULAR SLIDE RULE 260 (10 SC | $22.50 | 30-Jun-2008 | 7 |
| Vintage Concise Circular No. 300 Slide Rule - | $17.50 | 15-Jun-2008 | 6 |
| OLD BABCOCK & WILCOX CONCISE ROUND CIRCULAR SL | $17.50 | 08-Jun-2008 | 3 |
| "Vintage Concise Circular Slide Rule #28 & Cas | $16.73 | 20-Jun-2008 | 4 |
| Concise Circular Slide Rule With Case - No. 28 | $15.49 | 01-Jun-2008 | 4 |
| Concise CIRCULAR Slide Rule & Case Holiday Inn | $12.08 | 11-Jun-2008 | 2 |
| Vintage Coilcraft Circular Concise Slide Rule | $9.99 | 04-Jun-2008 | 1 |
| "Slide Rule CONCISE 28, nice" | $8.99 | 27-Jun-2008 | 1 |
| Concise Circular Slide Rule With Case | $4.02 | 01-Jun-2008 | 3 |
| CONCISE CIRCULAR SLIDE RULE - WORKS WITH NO BA | $2.25 | 30-Jun-2008 | 2 |
| Concise Circular Slide Rule with Instruction M | $24.99 | 29-Jun-2008 | 0 |