When using a leveling instrument to measure grade, what does it indicate when the numbers go up?

In leveling instruments, an increase in the numerical reading typically indicates that the grade is rising. This means that as you move the instrument along the terrain, higher readings correspond to points that are higher in elevation compared to the reference point initially set. Therefore, the correct answer here is that when the numbers go up, it signifies that the grade is indeed rising.

Understanding the context here is essential; a leveling instrument helps surveyors or construction professionals determine changes in height or slope across a landscape. If one were to observe numbers indicating a decrease instead, that would point toward a decline in grade.