What are the types of leveling rod?

There are several types of leveling rods, primarily including:

1. Fixed Height Rods: These are standard rods with a set length, often used in basic leveling tasks.
2. Telescopic Rods: These rods can be extended or retracted, allowing for adjustable height, which is useful in various surveying conditions.
3. Digital Rods: Equipped with electronic components, these rods provide digital readings for more precise measurements.

Each type serves specific purposes in surveying and construction.