The UMARK webpage
Dear Visitor,
the documents on this website are maintained by:
Udo Mark
E-mail:
At present time, the documents are covering two aspects:
The high-precision astronomical clock MAXCLOCK
The technically-oriented spreadsheet software TWTAB (in German)
Thankyou for visiting this website !
© 2025 Udo Mark
www.umark.de/index.html last revised: 2025-08-30