51.   As the waves travel through the ground, a radar measures changes when the waves bounce off of a land mine.

52.   Later, however, he decided that he could systematically measure changes in the overall market with a comprehensive database of the prices that paintings fetched at public auctions.

53.   The NAPM index measures change in business activity.

54.   The RPI measures the changes in the prices at which retailers dispose of their goods to consumers or households.

55.   Through fatter tips and growing numbers of American passengers, a cab driver who works outside the posh Hotel Nacional measures the change sweeping his country.

56.   Endeavour will fly over the same sites it observed last April in an effort to measure seasonal changes.

57.   The commerce department said the new system will measure price changes more accurately.

58.   The employment cost index measures changes in employee compensation costs, including wages, salaries and employer costs for benefits.

59.   The employment cost index measures changes in employee compensation levels, including wages, salaries and benefits.

60.   The employment cost index measures changes in employee compensation costs, including salaries and benefits.