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The concept of a laser level has been around since at least the early 1970s, [2] the original spinning-mirror design laser plane and line level was patented by the late 1980s, [3] and the compact lens-based laser line level (as produced by many tool manufacturers today) was patented in the late 1990s. It was invented by Oscar Soliz in the late ...
The term transit theodolite, or transit for short, refers to a type of theodolite where the telescope is short enough to rotate in a full circle on its horizontal axis as well as around its vertical axis. It features a vertical circle which is graduated through the full 360 degrees and a telescope that could "flip over" ("transit the scope").
Meteorologists also use total stations to track weather balloons for determining upper-level winds. With the average ascent rate of the weather balloon known or assumed, the change in azimuth and elevation readings provided by the total station as it tracks the weather balloon over time are used to compute the wind speed and direction at ...
Airport Transit System: 6 May 1993: VAL system: AirTrain JFK: 17 December 2003: SelTrac: AirTrain Newark: 31 May 1996: SelTrac: AirTrain SFO: 24 February 2003: Bombardier CITYFLO 650: Aria Express: 1 December 2009: DCC Doppelmayr Cable Car: Bay Area Rapid Transit: Oakland Airport Connector: 22 November 2014: DCC Doppelmayr Cable Car: Cincinnati ...
For instance, it is extremely uncommon to find an at-grade junction on a British motorway; it is all but impossible on a U.S. Interstate Highway, though a few do exist. If traffic can traverse the junction from any direction without being forced to come to a halt, then the junction is described as fully grade separated or free-flowing.
KLIA Transit: Rapid KL: KL Monorail: 31 August 2003: Philippines: Manila Light Rail Transit System: Line 2: 5 April 2003: Saudi Arabia: Mecca Metro: Al Mashaaer Al Mugaddassah Metro line: 13 November 2010: SelTrac: South Korea: Busan Metro: Line 1: 19 July 1985: Line 2: 30 June 1999: Line 3: 28 November 2005: Daegu Metro: Line 1: 26 November ...