| AcuMath |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Aug-2004 |
| "60s, 70s AcuMath SLIDE RULE, Case, Booklet, N | $8.99 | 06-Aug-2004 | 1 |
| Slide Rule Two Acumath #400 w/ instructions Li | $3.00 | 16-Aug-2004 | 1 |
| Old Acumath plastic slide rule w box and bookl | $9.99 | 11-Aug-2004 | 0 |
| Old Acumath plastic slide rule w box and bookl | $9.99 | 24-Aug-2004 | 0 |
| Vintage Acumath Slide Rule Complete | $5.00 | 10-Aug-2004 | 0 |
| Vintage Acumath Slide Rule Complete | $5.00 | 02-Aug-2004 | 0 |
| "ACUMATH Student Mannheim Slide Rule 5""" | $5.00 | 22-Aug-2004 | 0 |
| "Vintage Student Slide Rule by Acumath,#400 W/ | $5.00 | 18-Aug-2004 | 0 |
| Sterling Acumath Slide Rule No. 400 w/ case & | $3.99 | 25-Aug-2004 | 0 |
| VINTAGE ACUMATH MODEL NO.400 SLIDE RULE | $3.50 | 16-Aug-2004 | 0 |
| Vintage AcuMath Slide Rule NR | $1.25 | 21-Aug-2004 | 0 |