As mentioned in an earlier post on The Pocket Transit , I began looking for ways to estimate distance for the purpose of calculating the height of objects, like trees, buildings, cliffs, etc. Recall that if I could estimate the distance to the object and then determine the angle to the top I could use the tangent or sine, depending on Continue reading
Several months ago I was looking at an old single-burner stove on ebay (no surprise, right?) and in one of those little photos which slide along the bottom of the screen I noticed a peculiar looking item. It kind of looked like a compass, but more intricate. I clicked on the item, which was listed under the title M2 Artillery Compass, to get a closer look.
I did a little research Continue reading