A celebration of an "ordinary Kiwi farmer" who invented the modern milking machine is taking place today in Hamilton.
It's been a century since Norman John Daysh travelled to the United States to patent his idea with Swedish-based machinery company DeLaval.
His brainchild, the first commercially successful milking machine, was launched in 1917 in the United States.
The DeLaval Milker has been the model of vacuum-operated milking machines ever since.
The anniversary will be celebrated at the company's offices in Hamilton on Wednesday and Mr Daysh's grandson, John Daysh, is delighted with the recognition his father is getting.
"It's something we Kiwis should be really proud of and I'm certainly proud of my grandfather," he said.
"The centenary is a great time to let people know about this wonderful achievement of an ordinary Kiwi farmer."