Medical Definition of afferent. : bearing or conducting inward; specifically : conveying impulses toward the central nervous systemâcompare efferent.
Imperial Weight Units. The imperial system of weights, or more correctly the avoirdupois system of weights is the standard system of weight in the United States and is still in common usage in the United Kingdom. The system is based on a pound (lb) of 16 ounces (oz).
Steel tube. How to calculate the weight. The weight of tube is easily calculated. Simply multiply the appropriate alloy density by the calculation shown below of the required part. For imperial weight calculations certain measurements (fractions) need to be converted to decimal inches.