API's Radian PRO is the smallest, most accurate, versatile, and smartest laser tracker on the market. With a compact and sturdy design, the motors, encoders, and lasers are mounted on the aiming axis. Radian PRO has all the advantages of API's advanced laser tracking technology.

- Provides optimal performance for trackers:
- Higher accuracy
- Robust construction and stable measurement
- Thermal stability
- Compact and flexible
- Vertical, horizontal, and inverted measurement.

Measurement Range: 100 m (328 ft)
Horizontal Scan Speed 36 m/sec (20 ft/sec)
- HeNe Laser (IFM) Class II (eye-safe)
+ Resolution 0.08 μm (0.0000031 in)
+ Accuracy Better Than ±0.5 ppm
- Infrared Laser (ADM-Maxx) Class I (eye-safe)
+ Resolution 0.1 μm (0.0000039 in)
+ Locking Accuracy ±10 μm (±0.00039 in) or 1 ppm, whichever is greater
- Operating Temperature -10º C to > 45º C (14º F to > 113º F)
- Operating Range 0–25 m (0–82 ft)
- Tracker Weight 9 kg (19.8 lb)