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Anything used for comparison. For example, a company that wishes to determine whether its profits are increasing or decreasing may compare them to a previous year's profits. In this case, the previous year's profits are considered the base line. A baseline is also called a base. See also: Benchmark, Base currency.


East-west lines in the public land survey system, part of the baseline and meridian line components. Each principal meridian has a baseline. Properties in the principal meridian's area are described by their bearing east or west of the meridian and north or south of the baseline.

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Chief Auto bought the half-acre Base Line site in September 1997 from Louis and Joan Tavalione and Joe and Jacqueline Tavalione for $129,000.
Following delivery of the first three workstations, there will be two weeks of in-house system verification and 2-1/2 months of base line field testing at Fort Bragg, N.
Past research includes two very comprehensive bar code symbology tests to establish base line reliability data for the first two-dimensional bar code symbologies ("Code 16K and Code 49 Data Integrity Test") and to evaluate the robustness of those two high data capacity symbologies ("Code 16K and Code 49 Data Integrity Test").
In fixed installations such as a subway platform, tunnel or station, the zNose(R) establishes a base line environmental "odor profile" of the location and can then detect and identify potentially dangerous deviations from the base line in as little as 10 seconds with part per trillion sensitivity.
Fascia Displays - First Base Line, Third Base Line and Home Plate
In addition, several meetings were held with independent consultants and contractors to initiate bid proposals for various phases of the Base Line Study.
Activities during 1Q 2003 centered on preparing and delivering to the Peruvian government the base line study data that supports the EIA which was submitted in December 2002, negotiating a one year extension of the Tambogrande Option Agreement, as well as ongoing community activities for the EIA public audience review process.
The Cumberland River Compact will use funding to conduct sediment and stream bank loss data collection to establish a base line, implement rural and urban Best Management Practices, and institute several site-specific Best Management Practice demonstration projects.
There's a air-conditioned Hall of Fame room above the first base line, filled with Trojan memorabilia from their 12 national titles, where USC coach Mike Gillespie has his office, where there's even a giant-screen TV for those who want to keep up with the NCAA Tournament games.

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