Using the "cyclotest easy" women are able to determine whether ovulation has occurred thereby able to apply the rhythm method of birth control.
 
The older mercury filled model had become somewhat dated. The new "Cyclotest" measures much more quickly, stores the data allowing the cycles to be viewed and interpreted on the computer.
 
Our design task was to produce a personal accessory rather than a medical tool.
 
The tool-maker produced the first tools by using our data. For the "finer tuning", further consultation and collaboration was necessary before the "cyclotest easy " was complete and ready for serial production.