The CHCNAV i85 is a compact laser IMU-RTK GNSS receiver for topographic surveys, mining, utility mapping and forestry applications.
Its 1892-channel GNSS module and StellaX chip support reliable positioning, with stated RTK accuracy of 0.8 cm horizontally and 1.5 cm vertically under specified conditions.
An integrated laser rangefinder measures inaccessible points at distances up to 150 metres. IMU-compensated laser surveying offers stated accuracy up to 3 cm at 5 metres.
Dual cameras support smart aiming, AR visual navigation and stakeout, while a 200 Hz Auto-IMU enables efficient tilt-compensated measurements.
PointSky satellite corrections enable positioning without a local base station or NTRIP, with stated accuracy of 2.5 cm horizontally and 5 cm vertically, subject to service availability and conditions.
Weighing 800 g, the i85 delivers up to 20 hours of RTK rover operation. IP68 protection, 2-metre drop resistance and integrated UHF, Bluetooth, Wi-Fi and NFC support demanding fieldwork.
Size Guide
| Size | US | Bust | Waist | Low Hip |
|---|---|---|---|---|
| XS | 2 | 32 | 24 - 25 | 33 - 34 |
| S | 4 | 34 - 35 | 26 - 27 | 35 - 26 |
| M | 6 | 36 - 37 | 28 - 29 | 38 - 40 |
| L | 8 | 38 - 29 | 30 - 31 | 42 - 44 |
| XL | 10 | 40 - 41 | 32 - 33 | 45 - 47 |
| XXL | 12 | 42 - 43 | 34 - 35 | 48 - 50 |
Measuring Tips
Measure around the fullest part of your bust.
Measure around the narrowest part of your torso.
With your feet together measure around the fullest part of your hips/rear.
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