Pushing the Observer Effect
by Dan Wiswell We’ve all heard people speak of accuracies and tolerances in more colorful language than what would be expected in a metrology lab. “Plus-or-minus a hand grenade” or, “Close enough for government work” […]
In Days of Old
The En-Lightened Movement
by Dan Wiswell As we all know, many years ago there was a time when there were no electrical testing instruments. I often think of how difficult it must have been for the pioneers of […]
Measuring Days Gone By
by Dan Wiswell When people see some of the equipment that I’ve been tucking away over the years, the first question that most ask is: “How old is it?” We also hear this question at […]
Ghosts in the Landscape
by Dan Wiswell Growing up in the Merrimack Valley of Massachusetts I have always been aware of the mills that are in my area. I knew at an early age the difference between an old […]
Pieces Parts
by Dan Wiswell About thirty years ago I was doing some spring cleaning and decided to bring a few tables worth of items to a large flea market in south-central New Hampshire. I had an […]
Metrology Across the Ages
by Dan Wiswell I’m not sure when it occurred exactly, but sometime during the age of reason there used to be an educated group of people that were called philosophers. The term itself defined these […]