Which method is seldom used and relies heavily on angular precision for adjustments?

The transit rule is a method traditionally used in surveying that emphasizes the need for high angular precision when making adjustments to measurements. This method typically involves the use of a transit instrument to capture angular measurements and then uses those measurements to establish horizontal and vertical control. Its reliance on precise angles means that any small errors in angular readings can directly impact the accuracy of the results.

In contrast to other methods, such as least squares, which incorporates statistical principles to minimize overall error in a more holistic way, the transit rule does not accommodate systematic error adjustments to the same extent. As a result, the transit rule, while effective in some contexts, is seldom used in modern surveying practices that favor more reliable methods capable of compensating for various types of errors.