| AcuMath |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Oct-2004 |
| "VINTAGE ACUMATH 6"" SLIDE RULE AND CASE No. 1 | $14.75 | 05-Oct-2004 | 4 |
| VINTAGE ACUMATH SLIDE RULE NO 400 | $11.50 | 27-Oct-2004 | 3 |
| Vintage Acu-Math Acumath No. 400 Slide Rule - | $11.49 | 17-Oct-2004 | 3 |
| VINTAGE ACUMATH SLIDE RULE W/CASE AND BOOK | $9.05 | 07-Oct-2004 | 5 |
| Vintage ACUMATH No.1200 Slide Rule & Case N/R | $7.00 | 12-Oct-2004 | 1 |
| Vintage Acu-Math Acumath Slide Rules Rule 1311 | $5.99 | 17-Oct-2004 | 1 |
| ACUMATH 400 SLIDE RULE WITH CASE AND INSTRUCTI | $5.24 | 01-Oct-2004 | 2 |
| Vintage Student Slide Rule Acumath #400 W/Case | $3.99 | 11-Oct-2004 | 1 |
| "Acumath By Sterling Slide Rule With Case, Ins | $3.00 | 08-Oct-2004 | 1 |
| Vintage Acumath Slide Rule 9 Scales 1972 MOC T | $2.99 | 26-Oct-2004 | 2 |
| Vintage ACUMATH engraved slide rule w/case + # | $10.00 | 09-Oct-2004 | 0 |
| Old Acumath plastic slide rule w box and bookl | $7.99 | 06-Oct-2004 | 0 |
| "Acumath Slide Rule, 12"" No.400 by Sterling w | $5.99 | 13-Oct-2004 | 0 |
| Acumath No. 400 Slide Rule Signed Holt Origina | $5.00 | 28-Oct-2004 | 0 |
| "Sterling Acumath Slide Rule,400 w/ Case & Ins | $5.00 | 05-Oct-2004 | 0 |
| ACUMATH 400 SLIDE RULE MANNHEIM TYPE NICE COND | $4.99 | 10-Oct-2004 | 0 |
| Vintage Acumath Slide Rule 9 Scales 1972 MOC T | $2.99 | 09-Oct-2004 | 0 |
| Vintage Student Slide Rule by Acumath #400 W/ | $2.00 | 10-Oct-2004 | 0 |
| Mannheim Type Acumath Slide Rule | $1.99 | 22-Oct-2004 | 0 |
| VINTAGE ACUMATH NO. 400 SLIDE RULE | $1.49 | 25-Oct-2004 | 0 |
| Acumath Engraved Slide Rule Mod 400 | $0.99 | 27-Oct-2004 | 0 |