Use proper control size, displacement, and resistance
The control-response (C/R) ratio is defined as the amount of movement in a control divided by the amount of movement in the response.
A low C/R ratio indicates high sensitivity, such as in the coarse adjustment of a micrometer.
A high C/R ratio means low sensitivity, such as the fine adjustment on a micrometer.
Overall control movement depends on the combination of the primary travel time to reach the approximate target setting and the secondary adjust time to reach the exact target setting accurately.
The optimum C/R ratio that minimizes this total movement time depends on the type of control and task conditions