A rod person (rodman) is an entry-level member of a land surveying crew.
The core job is to position and hold the vertical rod or target the instrument operator sights on to measure angles, distances and elevations.
Around that center, the work runs from opening the survey line and setting stakes to recording field notes, entering data and helping turn measurements into the maps a survey produces.
What are the core duties of a rod person?
Rodman is one of the reported job titles in surveying and mapping technicians, the occupation that covers field crew work (O*NET).
The seat exists for one central task: positioning and holding the vertical rods or targets that instrument operators sight on to measure angles, distances and elevations.
BLS's duty list for the occupation adds the surrounding work: visiting sites to record survey measurements, searching for previous survey markers or setting out new markers, operating surveying instruments such as electronic distance-measuring equipment, and entering instrument data into computers.
O*NET's top task list fills in the field detail.
It includes setting out and recovering stakes, marks and other monumentation, and searching for section corners, property irons or survey points.
It also includes adjusting and operating instruments such as prisms, theodolites, EDMs and data collectors, calculating latitudes, longitudes, angles and areas from field notes, and entering GPS data, deeds and field notes into GIS.
In practice, the day centers on the rod.
The rod person carries it to each point, plants it steady while the operator measures, then moves to the next point.
When brush blocks the line of sight, the rod seat clears it.
Brush clearing is on BLS's task list for the occupation, and Washington State's trainee-level class spec lists clearing brush for line of sight among its survey duties.
Read those lists as occupation-wide rather than rod-only.
BLS and O*NET publish one occupation for the whole crew, so their task lists include work that sits with a lead seat on a given crew.
The sections below separate the work that reaches the rod seat from the work that does not.
What does the work look like from job prep to deliverable?
The published sources describe the job in tasks, not project phases.
Read together, those tasks map onto the life of a survey job in four stages: get the site ready, keep the measurements coming, turn the day's data into something the office can use, and see it through to the deliverable.
Getting the site ready
The rod work starts before any measurement. O*NET's task list includes searching for section corners, property irons or survey points, and setting out and recovering stakes, marks and other monumentation. Washington State's trainee-level Transportation Technician 1 spec adds clearing brush to open line of sight, setting hubs, writing information on stakes and lath, and setting up traffic control devices. Arkansas DOT's surveys technician class lists setting up safety equipment and flagging traffic, and using hand tools — a sledgehammer, an axe, a kaiser blade — to set markers and cut brush.Holding the rod while the instrument measures
This is the seat's signature work: positioning and holding the vertical rods or targets the operator sights on to measure angles, distances and elevations (O*NET). Washington's spec describes holding rods and prism poles to determine elevations and distances, chaining to measure distances and set reference points, and assisting with the field notes or the data collector. O*NET's task list adds recording survey measurements in notes, drawings and sketches, and BLS notes technicians may use drones to take photos.Turning the day's measurements into data
The work follows the crew back in. BLS lists entering the data from surveying instruments into computers, and says technicians help process data, including calculating angles and elevations and using CAD software. O*NET's task list includes calculating latitudes, longitudes, angles and areas from field notes, performing calculations for earth-curvature and atmospheric corrections, traverse closures, azimuths and level runs, and entering GPS data, deeds and field notes into GIS.The deliverable
O*NET's task list includes preparing topographic or contour maps of land surveyed — one place the crew's data ends up. What the rod seat does not do is take final responsibility for that product. The next two sections draw that line: who the rod person answers to, and which decisions stay with the licensee.
Who does a rod person report to and work with?
The working relationship at the center of the job is with the instrument operator.
The rods and targets the rod person holds are what the operator sights on to take each measurement — O*NET's task wording puts the two seats in the same sentence.
The learning relationship runs through lead staff.
BLS says survey technicians often learn on the job under lead staff, starting with simple tasks and working up.
O*NET's task list includes supervising or coordinating workers engaged in surveying — a party-chief-type duty.
Party chief is not a separate O*NET occupation, so the lead seat's work lives in this shared task list rather than in its own code.
Above the crew seats, the work runs through a licensed surveyor.
The NCEES Model Law defines responsible charge as exercising full professional knowledge of and control over the work, with authority to review, change, reject or approve it, and exempts work by a licensee's employees or subordinates that is done under the licensee's responsible charge.
The Model Law is NCEES's model rather than any state's law: each state board adopts its own definition for its own licensees.
Public agencies define their own lines.
Washington State's Transportation Technician 1 is the trainee, beginning level of its Transportation Technician series, so an agency rod hand reports into whatever crew structure the agency's class series sets up.
For the fuller crew picture — how many people ride on a crew and how the party chief, instrument operator and rod person seats divide — see survey crew roles, size and who does what.
What is a rod person NOT responsible for?
Start with what the licensure rules reserve to the licensee.
Under the NCEES Model Law, work by employees or subordinates of a licensee is exempt from licensure when it includes no final surveying designs or decisions and is done under the licensee's responsible charge and verified by the licensee.
In the Model Law, that exemption is what lets unlicensed employees work under a licensee.
The Model Law is a model rather than a state's law, and each state's own law sets the actual rule.
Within that frame, the rod seat's measurements feed work the licensee takes responsibility for.
The final surveying decisions and designs stay with the licensee, not with the crew seats.
The license itself is not the rod seat's.
BLS states licensing is not required for surveying and mapping technicians.
The land surveying license is a separate, state-issued credential held by the surveyor — BLS notes all 50 states and DC require surveyors to be licensed before providing services to the public, with requirements varying by state.
Supervision is not where the rod seat starts.
O*NET's task list puts supervising or coordinating workers engaged in surveying in the occupation — a party-chief-type duty.
BLS describes the entry seat beginning with simpler work, such as placing markers and entering data, and eventually helping decide where and how to measure the land.
The line is each state's, not this page's
How do duties change with experience level?
The sources describe the direction of the work rather than a timeline.
BLS says survey technicians often learn on the job under lead staff, starting with simple tasks such as placing markers and entering data, and eventually helping decide where and how to measure the land.
Our research found no verified figure for how long that progression takes.
Trainee-level class specs build the learning into the duty list itself.
Washington defines Transportation Technician 1 as the trainee, beginning level of its Transportation Technician series.
Its duty list reads that way: holding rods and prism poles, chaining distances, learning to run a level, clearing brush, writing on stakes and lath, setting hubs, assisting with field notes or the data collector, and setting up traffic control devices.
The occupation's task list spans the whole ladder, which is why one code covers the crew.
Alongside the rod work, O*NET lists supervising or coordinating workers — a party-chief-type duty — and compiling information needed to stake projects for construction from engineering plans.
Its 2026 task list adds using drone technology to capture aerial images or video for mapping, and writing boundary or easement legal descriptions.
Formal structure exists for people who want it.
O*NET lists four DOL-approved Registered Apprenticeship titles tied to the occupation: Chief of Party, Geodetic Computator, Photogrammetric Technician and Surveyor Assistant Instrument.
The long run leads to licensure or to the mapping side.
BLS describes both: survey technicians with many years of experience and formal training may be able to become licensed surveyors, and mapping technicians with more education or experience may advance to cartography or photogrammetry jobs.
Some surveyors begin as surveying technicians and become licensed after many years of experience under a licensed surveyor, with specific requirements varying by state.
For entry requirements, pay and outlook in brief, see the rod person career guide.
Sample rod person job description
The sample below is written for candidates, not employers.
It assembles a posting-style description from the BLS and O*NET duty lists for the occupation and the two state agency class specs cited above.
Our research did not gather a sample of private-firm postings, so treat this as a reading guide for listings rather than a standard anyone follows.
Job title: Rod Person (Rodman).
O*NET lists Rodman among the reported job titles for surveying and mapping technicians.
On SurveyorHires, rodman, chainman and survey helper searches all reach the same listings.
Position summary: Entry-level field member of a land surveying crew.
Holds the rod or prism pole for the instrument operator's measurements, helps set and recover survey markers, and assists with notes, data entry and calculations under the direction of lead staff.
Duties
- Position and hold vertical rods, prism poles and targets for measurements of angles, distances and elevations (O*NET; Washington State's Transportation Technician 1 spec).
- Chain distances, and help set hubs and stakes and lath, writing information on them (Washington State spec).
- Set out and recover stakes, marks and other monumentation; search for section corners, property irons and survey points (O*NET).
- Clear brush along the survey line and for line of sight (BLS; Washington State spec).
- Set up traffic control devices and safety equipment, and flag traffic (Washington State and Arkansas DOT specs).
- Assist with field notes and the data collector; enter instrument data into computers (Washington State spec; BLS).
- Help process data, including calculating angles and elevations and using CAD software (BLS).
Requirements
- High school diploma or equivalent — BLS's typical entry education for the occupation, and the level both public class specs list.
- Valid driver's license — BLS notes employers may prefer one, and Arkansas DOT's class requires it.
- Outdoor fieldwork in all types of weather (BLS). Arkansas DOT's class requires the ability to lift up to 50 pounds, to stand and operate survey equipment for at least two hours without a break, and to traverse rugged terrain — one state agency's requirements; private employers set their own.
Preferred, when asked
- High school math — algebra, geometry and trigonometry — plus coursework in drafting, mechanical drawing or computer science (BLS recommendations for the occupation).
- Added education or GIS experience — BLS notes some employers prefer it.
- Certification — optional for the occupation, per BLS.
Reading postings this way tells you quickly what a crew expects.
The duties repeat across the sources cited here; the requirements and physical demands are where the sources differ from one another, and the public agency specs are one employer type among many — our research did not sample private-firm postings.
Career information, not legal or licensing advice. Licensure and crew responsibility rules are state law — confirm them with your state licensing board.