| Date | 2011-08-03 |
| Location | |
| Message | excellent web.thank you.Sory.nou speek english. |
| Date | 2011-07-09 |
| Location | |
| Message | this is a really great collection. thanks for sharing it ![]() |
Private Message added 2011-07-07 |
| Date | 2011-07-07 |
| Location | |
| Message | I've always been fascinated by mechanical calculators, so 'thanks' for putting up this site. The Curta video was excellent. |
| Date | 2011-03-22 |
| Location | |
| Message | I worked for the Underwood Co, in Brighton Sussex for many years on the Sundstrand class C and D and the Elliot Fisher machines, had a great time, sorry its all gone. ![]() |
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