River study. Introduction Rivers usually follow three stages: the upper, middle and lower courses. Each stage has its typical features. The upper course.
MEASUREMENT. MEASURING TOOLS RULER DIAL CALIPER VERNIER CALIPER OUTSIDE MICROMETER DEPTH MICROMETER INSIDE MICROMETER INDIRECT MEASUREMENT HEIGHT GUAGE.
Precision Measurement. Precision Measuring Precision – How close together or repeatable the results are –A precise measuring instrument will give nearly.
