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I Laser Rangefinders
I.1 Introduction
This appendix describes the supported laser rangefinders that can be
used with the Asset Surveyor software.
I.2 Laser Technology Criterion 300 and 400
The Criterion 300 and 400 are both suitable for use with the Asset
Surveyor software as automated offset recording devices. The
Criterion 400 differs from the 300 in that it contains specialized
software for common forestry mensuration operations.
I.2.1 Hardware Specifications
The Criterion 300 and 400 hardware specifications are identical.
Dimensions
The laser itself measures 9 cm × 17 cm × 22 cm (3.5" × 6.5" × 8.5"). It
weighs 2.72 kg (6.0 lbs). The optional yoke (for fitting to a unipod or
tripod) weighs an additional 0.45 kg (1.0 lb). The rechargeable battery
pack weighs 0.91 kg (2.0 lbs), and is typically clipped to a belt or
carried in a backpack.
Laser details
The laser can typically take measurements up to 450 m (1,500 ft) to
most surfaces, and up to 12 km (40,000 ft) if used in conjunction with
a retro-reflector. A foliage filter is available to enhance performance
when shooting through light foliage and undergrowth, up to
approximately 200 m.
The minimum range of the laser is 3 m (10 ft).
The laser is accurate to ±9.1 cm (0.3 ft).
308 TSC1 Asset Surveyor Operation Manual