Frequently Asked Questions
What is the use of a leveling rod(grading rod) in surveying?
Why should a leveling rod(grading rod) be used to determine elevations?
How do you read a leveling rod(grading rod)?
For leveling rods with imperial graduations:
- Feet - marked in red
- Inches or tenths of a foot - marked by small black numbers
- Eighths of inches or hundredths of a foot - indicated by small marks between the numbers
For leveling rods with metric graduations:
- Tenths of meters - marked by huge numbers
- Centimeters - marked by squares, lines, or spaces
How do I use a leveling rod(grading rod)?
How long is a leveling rod(grading rod)?
How to Read a Leveling Rod
Leveling rods do not only come in different lengths, materials, and features—they also have varying graduations. That means there are different ways to read these survey rods. While the various rod types are useful in specific tasks, they can get a bit confusing to read, and reading their graduations is essential in getting the differences in elevation.
Fortunately, this video offers a comprehensive explanation of reading all kinds of leveling rods. It also demonstrates how to sight the graduations through an optical instrument as well as how to round a series of measurements taken.
In surveying, determining the elevations or differences in heights can significantly help when leveling, establishing grades, or excavating. This task often requires leveling instruments. However, measuring elevations can’t be done with leveling instruments alone—surveyors also need a leveling rod to use with these instruments. These leveling rods feature graduations to easily measure the differences of elevations. Some leveling rods have powder coatings to protect their graduations against the harsh elements in outdoor settings, while others have graduations that are engraved by laser beams. There are also leveling rods that feature integrated bubble levels so that measuring can be done accurately.
For readability and visibility, some have self-illuminating features to light up their graduations as well as their bubble levels, suitable in low light conditions. Since leveling rods are mostly used outdoors, they are designed to be durable and waterproof, so there’s no need to worry about them getting damaged in tough field conditions. With leveling rods of varying lengths and features here on Engineer Warehouse, you can choose one that can help you measure elevations conveniently.