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Politics : Politics for Pros- moderated -- Ignore unavailable to you. Want to Upgrade?

To: DMaA who wrote (301418)	4/16/2009 9:16:43 PM
From: ManyMoose	1 Recommendation Respond to of 793912

My favorite is the chain. There are four rods in a chain. Eighty chains in a mile. A chain is 66 feet long so a square chain = 4356 square feet -- one tenth of an acre. Since the advent of GPS and laser technology, the tail chainman don't have to holler "Chain!" to signify the when the rear end of the chain reaches the way point and the head chainman is to mark another waypoint. A chain has a tail too. It's marked in graduations that allow easy corrections for slope. Using a topographic abney, you determine the angle of slope in feet per chain between the head and tail chainmen. The tail chainman finds the mark on the tail corresponding to the slope, and holds that over the way point, which corrects for slope without any calculations at all. Way cool! There's a right way and a wrong way to throw a chain, too. Done right, a coiled chain settles in on a double loop half the diameter it would be if you couldn't throw the chain. It's a skill that all foresters learned early on, before GPS. I'm glad I lived through the era that didn't have GPS. I like it and will even use it, but you have to know the basics or you're going to get your tail L O S T.