Trimble S6 Robotic Total Station: Used Price, Specs, and What to Check Before You Buy

The Trimble S6 is the used robotic total station we get asked about more than any other, and for good reason. It was Trimble's flagship robot for a decade, there are thousands of them in the field, and a calibrated S6 sells today for roughly a quarter of what it cost new.

This guide covers what a used Trimble S6 costs in 2026, the specs that matter, the difference between the accuracy grades, what you get in a bare-instrument listing versus a kit, and a checklist to run through before you buy one from anyone (including us). Questions on a specific unit? Contact us.

Trimble S6 Used Price (2026)

Here is what we're currently selling calibrated S6 instruments for:

Instrument	Accuracy	Includes	Price
Trimble S6 DR300+ Robotic	5"	Instrument, battery, 2-bay charger, 2.4 GHz antenna, original case	$6,895
Trimble S6 DR300+ Robotic	2"	Instrument, battery, 2-bay charger, 2.4 GHz antenna, original case	$6,895

Across the used market, a bare S6 robotic instrument runs about $6,000 - $11,000 depending on accuracy grade, DR version, condition, and whether it has been calibrated. Complete kits with a TSC3 or TSC7 controller, EM120 radio, and MT1000 prism run $10,000 - $16,000. Both of our units above ship free to the U.S. and Canada and have been cleaned, calibrated, and firmware-updated by an authorized Trimble dealer.

For context on how the S6 compares to other options, see our full guide to total station prices in 2026.

What Is the Trimble S6?

Trimble introduced the S6 in January 2005 and built it until 2015, when the S5, S7, and S9 replaced it. It was the first Trimble total station with MagDrive servo technology, an electromagnetic direct-drive system that turns the instrument fast (115 degrees per second), silently, and without gears to wear out. It also introduced SurePoint, which actively corrects the instrument's pointing for wind, vibration, and tripod settling, and MultiTrack, which lets you choose between passive prism tracking and active tracking with a target ID so the robot doesn't lock onto a road sign or a safety vest.

In plain terms: the S6 was designed from the ground up for one-person robotic surveying, and it still does that job well. It shows up on boundary crews, topo crews, and construction layout crews all over North America.

Trimble S6 Specs That Matter

Spec	Trimble S6 DR300+
Angle accuracy (DIN 18723)	2", 3", or 5" (1" on the High Precision EDM version)
Distance accuracy, prism	±(3 mm + 2 ppm) standard; ±(10 mm + 2 ppm) tracking
Distance accuracy, DR (reflectorless)	±(3 mm + 2 ppm) standard; ±(5 mm + 2 ppm) beyond 300 m
Prism range	2,500 m to a single prism; 5,500 m in long-range mode
DR300+ reflectorless range	300+ m on an 18% gray card; 800+ m on a 90% reflective surface; 300 - 400 m on concrete
Robotic / Autolock range	500 - 700 m to passive prisms; 800 m to a MultiTrack active target
Autolock pointing precision at 200 m	Under 2 mm
Servo	MagDrive electromagnetic direct drive, 115°/sec, 3.2 sec Face 1 to Face 2
Compensator	Centered dual-axis, 0.5" accuracy
Telescope	30x, 40 mm aperture, coaxial Zeiss optics
Laser pointer	Coaxial, class 2
Battery life	About 6 hours robotic on one internal Li-ion battery; 12 hours in the robotic holder
Weight	5.25 kg (11.6 lb) robotic instrument
Environmental	IP55, -20 °C to +50 °C
Radio	Internal 2.4 GHz robotic radio (pairs with an EM120 radio on the controller)

Source: Trimble S6 datasheet. Later "DR Plus" versions of the S6 extended reflectorless range well beyond the DR300+ figures.

DR300+ vs. DR Plus

You'll see both on used listings. DR300+ is the original Direct Reflex EDM, rated to 300+ meters on a typical surface. DR Plus arrived on later S6 units (and carried into the S5/S7) with substantially longer reflectorless range. For layout and topo work under 300 m, DR300+ is more than enough. If you regularly shoot reflectorless across highways, quarries, or building faces at long range, look for DR Plus or step up to an S5/S7.

2" vs. 3" vs. 5": Which S6 Should You Buy?

The arcsecond rating is the angular accuracy standard deviation. The practical difference at working distances:

• 5" S6: about 2.4 mm of angular error at 100 m. Ideal for construction layout, grading, utilities, and general topo. The best value on the used market because many buyers overlook it.
• 3" S6: about 1.5 mm at 100 m. The all-rounder for boundary and topo crews.
• 2" S6: about 1 mm at 100 m. Boundary retracement, control, and tighter construction tolerances. Costs the same as a 5" in our inventory right now, which makes it the obvious pick if you want headroom.
• 1" S6 HP: the High Precision EDM version with ±(1 mm + 1 ppm) prism accuracy. Rarer and pricier; used for monitoring and industrial work.

For most crews, a 2" or 3" S6 covers everything. If you only do layout, the 5" is a legitimate money-saver.

What a "Bare" S6 Listing Includes (and What It Doesn't)

Our S6 listings include the instrument, one battery, a 2-bay charger, the 2.4 GHz radio antenna, and the original Trimble hard case. To run it robotically you also need:

• A Trimble data collector with Trimble Access (TSC3, TSC7, T7, T10, or T100). We stock TSC7s with perpetual Access licenses from $4,995.
• An EM120 2.4 GHz robotic radio for the controller. Some of our TSC7 listings include it; check the description.
• A prism. A Trimble MT1000 MultiTrack active target gives you the full 800 m tracking range and target ID. A passive 360 prism works but with shorter range and no ID.
• A tripod, prism pole, and tribrach if you don't already own them.

Budget roughly $12,000 - $14,000 to build a complete one-person S6 setup from a bare instrument, or ask us to quote a kit.

Trimble S6 Pre-Purchase Checklist

Run through this whether you buy from us or from a private seller on eBay.

1. Calibration certificate. Ask for a recent calibration from an authorized Trimble dealer, with paperwork. Every S6 we sell ships with one.
2. Firmware version. Confirm the instrument firmware is compatible with the version of Trimble Access on your controller. Older S6 firmware can refuse to connect to current Access releases.
3. Radio test at range. Have the seller confirm the 2.4 GHz radio holds a link at working distance, not just across a shop. We range-test every robot before shipping.
4. MagDrive servos. Turn the instrument through both axes. It should be smooth and nearly silent. Grinding or hesitation means a servo or bearing issue.
5. Autolock and tracking. Lock onto a prism, break the lock, and confirm it re-acquires. Test with the prism type you'll actually use.
6. DR laser. Take a reflectorless shot to a wall at 100+ m and confirm the reading and the laser pointer alignment.
7. Battery health. Original S6 batteries are old. Ask when they were replaced and how long they hold a charge. Budget for a fresh pack if not.
8. Compensator. Check that the dual-axis compensator settles and holds within a few seconds of setup.
9. Case, tribrach, and accessories. The original case matters for shipping and field life. Confirm what's actually in the box.
10. Serial number. Check it against Trimble's records and stolen-equipment lists. Here's how to avoid buying stolen gear.

Trimble S6 vs. S3 vs. S5: Quick Comparison

	Trimble S3	Trimble S6	Trimble S5
Years	2010 - 2015	2005 - 2015	2015 - present
Accuracy options	2", 5"	1", 2", 3", 5"	1", 2", 3", 5"
Reflectorless range	400+ m	300+ m (DR300+) or extended (DR Plus)	1,300+ m (DR Plus)
Servo	Conventional servo	MagDrive	MagDrive
Tracking	Passive; active optional	Passive, MultiTrack	Passive, MultiTrack, Active Track 360
Typical used price (bare)	$4,500 - $6,500	$6,000 - $11,000	$9,000 - $14,000

The S3 is the budget robot; the S5 is the modern one. The S6 sits in the middle with MagDrive performance at close to S3 money, which is exactly why it's so popular used.

Who Should Buy a Used Trimble S6?

• Crews adding a robot on a budget. One person can run boundary, topo, and layout with an S6 and a TSC7 for under $14,000.
• Firms already in the Trimble ecosystem. Same Access software, same prisms, same batteries as your other Trimble gear.
• Anyone needing a backup instrument. A calibrated S6 is a cheap way to keep a second crew moving when the primary robot is in for service.

Skip it if you need long-range reflectorless work (get an S5/S7 with DR Plus), Trimble Vision imaging (S7), or scanning (SX10/SX12).

Ready to Buy?

Both of our calibrated S6 instruments are in stock and ship free to the U.S. and Canada: the Trimble S6 5" DR300+ and the Trimble S6 2" DR300+, both $6,895. Need a controller, radio, or prism to go with it? Send us a note and we'll put together a complete kit, or browse all our used Trimble survey equipment.