| AcuMath |
| Description | Price | Date | Bids |
Prices of slide rules sold on ebay (the internet auction) in Sep-2004 |
| "Acumath Mannheim Type Slide Rule No 1240, Cas | $5.00 | 13-Sep-2004 | 1 |
| Acumath No. 500 Slide Rule with Case and Instr | $4.00 | 07-Sep-2004 | 1 |
| "Vintage Student Slide Rule by Acumath,#400 W/ | $3.00 | 23-Sep-2004 | 1 |
| ACUMATIC Mannheim Slide Rule Instruction Manua | $2.25 | 20-Sep-2004 | 3 |
| ACUMATH Slide Rule #500 Mint | $1.00 | 12-Sep-2004 | 1 |
| Vintage ACUMATH engraved slide rule w/case + # | $10.00 | 22-Sep-2004 | 0 |
| ACUMATH #400 SLIDE RULE w/ orginal case & inst | $9.95 | 15-Sep-2004 | 0 |
| Old Acumath plastic slide rule w box and bookl | $6.99 | 07-Sep-2004 | 0 |
| "ACUMATH Student Mannheim Slide Rule 5""" | $5.00 | 08-Sep-2004 | 0 |