I might understand if there was a slight nonlinearity versus temperature. But what you seem to be suggesting is nonlinear versus length, and I have n...

There may be another one standing in Florida, as mentioned here.

Lat-lon registration of photos may vary easily 50 ft and sometimes much more. The relative distances if you stay on one sheet are pretty good.

That's a big peeve for me on the older Garmin I have. ITenths of a mile is reasonable for traveling but not for many recreational, scientific, and bu...

Wells Fargo-DanAreas that flood are are created by nature (or badly designed development.Flood Zones are identifications (correct or mistaken) created...

Was he trying to run by grid bearing? Seems unlikely. If not, it would be interesting to know how much the grid convergence changes over the length ...

Maybe this is covered in the spec, but it isn't at all clear to me. If the published spec is for one pointing, then for 2 pointing isn't the std dev ...

How do you estimate the proper pivot point depth? If you don't dig much vs digging almost to the bottom of the post, won't you get a different result...

Sounds like it should work if the geometry is reasonable. You won't sight the center of the stack, I hope, since that is probably a wide target. I'd...

I use another version of the little LED book light to clip onto the mirror and illuminate the scale. It doesn't do anything for the reticule.I'm thin...