On the first Sunday of every month David Kirkaldy's massive testing machine is open for public viewing. Kirkaldy, a Scottish Engineer, developed this enormous machine in the 19th century for testing the reliability of enormous pieces of metal. A whole floor of the building is given over to this incredible machine 47 feet long and weighing 116 tons. Visiting this museum feels like taking a secret tour which nobody else knows about. Even the door is locked (for safety reasons) and a sign directs you to ring a doorbell. To start you are shown a short film about metals testing and the history of David Kirkaldy's company. Then a volunteer will show you round the collection, which includes many other smaller metal testing devices. The volunteers are endlessly knowledgeable and friendly and there's the opportunity to ask plenty of questions. On the first Sunday of every month David Kirkaldy's massive testing machine is open for public viewing. Kirkaldy, a Scottish Engineer, developed this enormous machine in the 19th century for testing the reliability of enormous pieces of metal. A whole floor of the building is given over to this incredible machine?47 feet long and weighing 116 tons. Visiting this museum feels like taking a secret tour which nobody else knows about. Even the door is locked (for safety reasons) and a sign directs you to ring a doorbell. To start you are shown a short film about metals testing and the history of David Kirkaldy's company. Then a volunteer will show you round the collection, which includes many other smaller metal testing devices. The volunteers are endlessly knowledgeable and friendly and there's the opportunity to ask plenty of questions.