| Lawrence |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Feb-2008 |
| Wooden Slide Rule Lawrence Engineering Service | $26.00 | 06-Feb-2008 | 2 |
| 1939 LAWRENCE SLIDE RULE KIT. ORIGINAL BOX AND | $19.00 | 17-Feb-2008 | 4 |
| Vintage Wood Lawrence Engineering Slide Rule 2 | $13.00 | 12-Feb-2008 | 6 |
| Lot Vintage Lawrence Slide Rule Fundamentals B | $12.50 | 08-Feb-2008 | 2 |
| "3 SLIDE RULES , 1 LAWRENCE AND 2 UNKNOWNS WIT | $9.99 | 05-Feb-2008 | 2 |
| Lawrence Engineering Wabash Ind Slide Rule Woo | $9.99 | 26-Feb-2008 | 1 |
| 1947 Lawrence Model Builder's SLIDE RULE Peru | $9.99 | 18-Feb-2008 | 2 |
| 1939 LAWRENCE SLIDE RULE Instruction Book-Peru | $7.50 | 04-Feb-2008 | 1 |
| "Lawrence Slide Rule - Peru, Indiana" | $7.00 | 29-Feb-2008 | 2 |
| VINTAGE LAWRENCE SLIDE RULE WOODEN RULER ENGIN | $6.50 | 06-Feb-2008 | 4 |
| Vintage Wood Lawrence Engineering Slide Rule 1 | $5.50 | 12-Feb-2008 | 2 |
| "Vintage SLIDE RULE - Lawrence Engineering Ser | $5.00 | 10-Feb-2008 | 1 |
| Old Lawrence Engineering Peru Indiana Wood Sli | $4.99 | 22-Feb-2008 | 1 |
| "Lawrence Engineering 8-B 8"" Wood Slide Rule" | $3.25 | 27-Feb-2008 | 2 |
| "Lawrence Engineering 10-B 10"" Wood Slide Rul | $3.00 | 27-Feb-2008 | 1 |
| LAWRENCE DELUXE SLIDE RULE | $14.97 | 18-Feb-2008 | 0 |
| "Lawrence Slide Rule Engineer Ruler Made Peru, | $11.25 | 27-Feb-2008 | 0 |
| Vintage 10-B Wood Lawrence Slide Rule with Cas | $9.99 | 06-Feb-2008 | 0 |
| Vintage Lawrence Engineering Wooden Slide Rule | $4.99 | 17-Feb-2008 | 0 |
| "Vintage Slide Rule - Lawrence Engineering, Pe | $4.25 | 24-Feb-2008 | 0 |
| Lawrence Engineering Service Wooden Slide Rule | $3.99 | 03-Feb-2008 | 0 |
| Lawrence Slide Rule with book dated 1939 / 194 | $0.99 | 24-Feb-2008 | 0 |