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Express Tools
GPS / GNSS
RTK GPS and GNSS receivers provide centimeter-level positioning anywhere you have sky — no total station setup, no line-of-sight constraints. Used for boundary survey, construction stakeout, topographic mapping, and machine guidance, GNSS is how modern crews cover ground fast.
Ships across all 50 US states. Same-day dispatch on in-stock orders before 2pm CT.
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Drop your email and we'll set you up with a free 30-day Gradelog trial. Gradelog walks you through setting up and calibrating your gps / gnssstep by step, then keeps every tool tracked — AI troubleshooting, shot logging, and job documentation, all from the field. You'll also be first to know when new tools and deals land at Express Tools.
- Guided laser setup & calibration — get it dialed in right
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Track every gps / gnss in Gradelog.
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Quick Answer
What is the best GPS / GNSS for contractors?
RTK GPS and GNSS receivers provide centimeter-level positioning anywhere you have sky — no total station setup, no line-of-sight constraints. Express Tools is an authorized dealer for Topcon, Trimble, Leica, and Spectra Precision gps / gnss. Same-day shipping before 2 PM CT.
About GPS / GNSS
What are GPS / GNSS?
RTK GPS and GNSS receivers provide centimeter-level positioning anywhere you have sky — no total station setup, no line-of-sight constraints. Used for boundary survey, construction stakeout, topographic mapping, and machine guidance, GNSS is how modern crews cover ground fast.
Who uses GPS / GNSS?
General contractors, civil engineers, surveyors, grading crews, pipeline installers, and utility contractors rely on gps / gnss daily to deliver accurate, on-spec work — from initial layout through final as-built documentation.
Why buy GPS / GNSS from Express Tools?
Express Tools is an authorized dealer for every brand we carry — meaning your equipment is genuine and factory-fresh, with factory support and legitimate firmware access. Orders placed before 2:00 PM CT ship the same day, so your crew stays on schedule.
Frequently Asked Questions: GPS / GNSS
How accurate is RTK GPS for construction stakeout?
RTK GPS achieves 0.5–1 in horizontal accuracy and 1–2 in vertical accuracy under good satellite and correction geometry. For most construction stakeout (rough grade, utility stakeout, road alignment), RTK is fast and accurate enough. For precise vertical work (finished grade, concrete forms, pipe invert), optical total station or laser level is preferred — RTK vertical accuracy varies with satellite geometry and atmospheric conditions.
What is the difference between RTK GPS and network RTK (NTRIP)?
RTK GPS uses a local base station you set up on a known point — the base broadcasts corrections to your rover. Network RTK (NTRIP) uses corrections from a network of permanently mounted base stations, delivered over the internet. NTRIP eliminates the need to set up and move a base station, which speeds up production work on projects that span large areas. NTRIP subscriptions typically cost $50–$150/month; verify network coverage in your work area before subscribing.
Can I use GPS for underground utility stakeout?
GPS works well for above-ground utility stakeout — marking where trenches will go, setting horizontal alignment stakes. It cannot locate underground utilities (that requires utility locating equipment). For stakeout inside structures, underground, or in areas with limited sky view (urban canyons, under tree cover), a total station is more reliable than GPS due to satellite geometry limitations.
Field Documentation
Your GPS / GNSS work harder with Gradelog
Calibration tracking, AI troubleshooting, shot logging, and as-built documentation — built for contractors using gps / gnss. Free to start, no credit card.
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Your equipment. Your data. All in one place.
Gradelog is the field-execution platform built for grading and earthwork crews. Log grade shots, track cut/fill, document phases with photos, and generate as-built reports — from the cab to the office.
- Grade shots & cut/fill tracking per job
- Photo documentation by phase, task, and equipment
- As-built reports ready for inspector sign-off
- AI field assistant — troubleshoot on the jobsite
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