When wilson, a manufacturer of tennis racquets, sent a team of researchers, designers, and tennis pros out to visit with 40 women tennis players of various abilities in locations from california to florida to find out what women players want in a racquet, what kind of research were they conducting?

Primary research    

Explanation: Primary research is the process of researching that is doen by the individual itself or the people hired by him/her .It includes conduction of surveys, study , observation, raw data etc by the person on his own. Example - taking an interview of any political figure by person himself.

According to the question, primary research process is used by Wilson by hiring the researchers team professional tennis members and designers for conducting the research about the requirement of female players in tennis racquet. Thus, this research is done by primary source itself which makes it a primary research.

uses : -

1.aneroid barometers primarily measure whether pressure is rising or falling.

2.aneroid barometers are often used for reading pressure in homes and recreational boats.  

3.other uses may include barographs in meteorology and altimeters in modern aircraft.  

4.this type of barometer can announce whether a high or low pressure system is coming or whether it is becoming more intense.  

5.there are different types of aneroid barometers, such as the altimeter, which measures altitude, or distance above sea level.  

6.another example is a barograph, which is a modified aneroid barometer that provides constant readings of atmospheric pressure on graph paper.  

7.when used in this capacity, the aneroid barometer can store a week's worth of data.

android diameter a device for measuring atmospheric pressure , often specially calibrated for use as an altimeter ,consisting of a box or chamber partially exhaused of air, having an elastic top and a pointer to indicate the degree of compression of the top caused by the external air

refer to the attachment for the characteristics : -

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