IP54 protection, not waterproof
Memory for 20 measurements
Compass specification not given, describes it as "heading" capability
User calibration required.
Interesting but suspect the compass specification will not be good enough for cave surveying.
There is a low cost Clino/Compass combo unit available from SAC model NS1620 available from CPC at Farnell.http://cpc.farnell.com/jsp/displayProdu ... llbrochure
Cave Surveying Options - ( Not a complete list !):
1. SAC NS1620 or equivalent Compass/Clino combo or separates plus 30m tape measure and waterproof paper notepad
$$ Inexpensive, tape measure will get gritted up and eventually fail.
2. SAC NS1620 plus Disto DXT and waterproof paper notepad.
$$$ DXT has water resistance. Add some reflective tape to the notepad cover to improve Disto distance.
3. SAC NS1620 or Suunto KB14 or KB20 or equivalent Compass plus Disto X310 and waterproof paper notepad.
$$$ Disto X310 has water resistance and built-in tilt sensor so only need a compass.
4. DistoX and waterproof paper notepad or water protected PDA
$$$ DistoX not water resistant, needs to be protected. All-in-one measurement reduces measurement time and does not require getting your eye to the instrument, useful in confined spaces. Straight to digital option using Bluetooth link to PDA running free Cave Surveying drawing software eg. Auriga, PocketTopo. Alternatively book everything on paper in the cave then Bluetooth download the DistoX memory to Laptop or PDA when you get to the surface to reduce transcription errors.
5.TruePulse 360B or 360R
$$$$ Very expensive. Extra long range for really big caves. 360B not very water resistant. 360R has better water resistance.
Has Bluetooth but unknown if they interface to the available PDA cave surveying software.
6. 3D scanners
$$$$$$ Lots of money, lots of time, lots of risk - you must be mad.
Other gizmos that have and are still being used by some include the DUSI and Shetland Attack Pony.