| Concise |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Jul-2008 |
| Concise 380 Radio Computer Slide Rule (Alvin N | $149.99 | 30-Jul-2008 | 1 |
| CONCISE Circular Slide Rule - Model 600 PERIOD | $52.99 | 20-Jul-2008 | 14 |
| "Concise Circular Slide Rule, case, instruct, | $32.00 | 21-Jul-2008 | 10 |
| "Concise Circular 3 3/4"" Slide Rule Model 260 | $27.90 | 12-Jul-2008 | 5 |
| CONCISE CIRCULAR SLIDE RULE WITH MANUAL | $23.95 | 26-Jul-2008 | 4 |
| VINTAGE CONCISE CIRCULAR SLIDE RULE & CONVERSI | $23.50 | 13-Jul-2008 | 9 |
| "Vintage CONCISE CIRCULAR SLIDE RULE, TYPE A - | $22.25 | 14-Jul-2008 | 6 |
| concise #300 circular log log duplex slide rul | $22.00 | 30-Jul-2008 | 6 |
| "Concise No. 28N Circular Slide Rule, 3-1/4 in | $21.49 | 22-Jul-2008 | 6 |
| Vintage Concise Circular Slide Rule 1970 Upjoh | $20.50 | 21-Jul-2008 | 6 |
| Vintage Takeda Concise No 28 Circular Slide Ru | $20.50 | 15-Jul-2008 | 5 |
| "Concise Number 28N 3-1/4"" Circular Slide Rul | $20.27 | 03-Jul-2008 | 7 |
| "Concise Number 28N 3-1/4"" Circular Slide Rul | $20.27 | 03-Jul-2008 | 7 |
| CIRCULAR SLIDE RULE BY CONCISE FACTORY SEALED | $16.39 | 03-Jul-2008 | 5 |
| CIRCULAR SLIDE RULE BY CONCISE FACTORY SEALED | $16.39 | 03-Jul-2008 | 5 |
| "Concise Number 28N 3-1/4"" Circular Slide Rul | $12.50 | 22-Jul-2008 | 5 |
| VINTAGE CONCISE #28 SLIDE RULE & POUCH LIKE NE | $9.99 | 30-Jul-2008 | 1 |
| "NM CONCISE 28N 3 1/4"" CIRCULAR SLIDE RULE LQ | $9.99 | 20-Jul-2008 | 1 |
| CIRCULAR SLIDE RULE & CONCISE SCIENCE TABLES + | $9.99 | 20-Jul-2008 | 1 |
| CONCISE Circular Slide Rule - No. 28 - Key Lin | $7.95 | 20-Jul-2008 | 4 |
| Concise SLIDE RULE | $6.86 | 30-Jul-2008 | 5 |
| Concise Circular Slide Rule International Harv | $4.01 | 19-Jul-2008 | 4 |
| Concise Circular Slide Rule | $27.00 | 22-Jul-2008 | 0 |
| Concise Circular Slide Rule with Instruction M | $24.99 | 02-Jul-2008 | 0 |
| VINTAGE CONCISE #28 SLIDE RULE & POUCH LIKE NE | $9.99 | 30-Jul-2008 | 0 |