|Types of Rods
|Grade or Level Rods
||Leveling rods are typically made from aluminum or fiberglass and are graduated in feet and tenths, or feet and inches depending on the users preference.
|Philadelphia Level Rods
||Philly Rods feature two sliding sections joined by a brass sleeve; can be used for measurements of to 13 feet; can be read with a level from a distance of up to 250 feet
|San Francisco Level Rods
||Similar to the Philadelphia rod; features three separate, sliding sections for extending or reducing length.
|Direct Reading Rods
||Read directly through a optical scope by the user. Direct Reading Rods are also known as self-reading rods.
|Direct Elevation Rods
||Has a graduated strip that revolves around the rod using rollers and features numbers in reverse order which are capable of providing elevation readings without need for additional foresight and backsight calculations. This saves time and avoids most errors.
||Features a target, making it possible for the person holding the rod to double check the readings presented by the person handling them surveying instrument