"Most of the work was double checking the stuff I got off the internet was going to work. I made a model of this and I tried it out at home because I've got a north/south line in my driveway," he said.
In the middle of the human sundial is a date scale with each month of the year, and surrounding it are the hour markers with two numbers - the top number is New Zealand Standard time while the bottom is Daylight Saving time.
To use the sundial you stand on the centreline of the date scale with one foot on the correct month - this is to ensure accuracy as the sun rises in different positions in winter and summer.
You then hold your hands together above your head and when the sun is out it will cast a shadow telling the time which will be accurate to about 15 minutes.
"This has been quite exciting seeing the enthusiasm and energy that the kids have. The kids were coming and going and asking questions," Mr Adam said.
Mrs Hepi said as part of the research process students visited the library and read about sundials and made their own simple versions. They also went to the Town Basin to look at the sundial there.
"The interest is huge and the kids couldn't wait to come down and use it," she said.