Saw these Hilti laser range finders on offer for ?59. Anyone in the know think they are ok for cave surveying?
http://www.hilti.co.uk/holuk/page/module/home/browse_main.jsf;jsessionid=4E732AA060BD1E9112A51A1FE067EDB2.node2?lang=en&nodeId=-529962
http://www.hilti.co.uk/holuk/page/module/home/browse_main.jsf;jsessionid=4E732AA060BD1E9112A51A1FE067EDB2.node2?lang=en&nodeId=-529962