rickinco123 wrote:Hacksaw wrote:The Backcountry Field Card by Hacksaw Publishing has a slope angle inclinometer on it for $5.50.
If that is the same one I have, it has the slope measure hashes you can place on a USGS map and measure the slope by lining up the hashes with the elevation lines, awesome! The slope meter is a string placed through a hole in the card, you must fix a weight to it. I use fishing shot. Low tech and field repairable. The only downside is the slope can only be measured in 1 direction but I have always been able to compensate for that, never had a problem with wind. Also doubles as a ski scraper
No, I don't think that my field card is the same one you have.
My field card does not have the slope angle "hash marks" you refer to. I personally have found those type of hash marks to be VERY misleading when it comes to exact route finding in avalanche terrain. All to often I have found avalanche slopes that "hide" in between the 40 foot contour intervals, which the hash marks don't show.
My field card has a full plumbob protractor so that you can measure slopes in both directions. And it can even be used to look down and up slope to get ruff slope angles. The great part about my field card is that it has the small group avalanche rescue flowchart on the back of it. So, its not a bad tool to have with you when the poo hits the fan...
Personally, I think it is a good idea at the beginning of each winter season to use a slope inclinometer and measure lots of slopes before the snow flies; in order to develop your minds eye to "what's steep enough" to avalanche. My grange roof is 28 degrees, every time I pull out of the grange to go on a backcountry trip, I take a second or two to look at that roof and remind myself that's the slope angle to start being on guard with.