Rotameter (railway)
Appearance
![](http://upload.wikimedia.org/wikipedia/commons/thumb/1/13/Arhs-rotameter.jpg/220px-Arhs-rotameter.jpg)
The New South Wales Government Railways constructed in 1903 a device for measuring the length of its lines of railway. That authority named the machine a Rotameter. It consisted of a four-wheel trolley with an additional large fifth wheel which traveled along the running surface of the rail. Its last recorded use was in the 1920s.[1]
References
[edit]- ^ "How Far is That? The Story of the NSWGR Rotameter" Australian Railway History, September, 2007 pp333-343