PSCS,"If the prism is a nodal prism the cross hairs will show very little movement from the center of the prism."You mean I have to buy it first befor...

PSCS,"There are a lot of misnomers about NODAL prisms, how they work and why different prisms claim to be nodal yet have differing offsets."I'd really...

Doka,"...have you ever tried rotating your rod about 30 degrees at a time and monitoring the distance and angle?"My buddy Carlos did that with an S6 a...

Jim,I've seen prisms like that one, on eBay for dirt cheap prices from China. But I have to wonder about quality. Leica crows about its "higher than a...

Thanks G, S, and PB. The mini will definitely be easier to carry, and I can easily switch back and forth between laying out footings with the 360 pris...

Scott,I'm curious. Can you take the classes on your own schedule, or do you have to be sitting in front of your computer at scheduled times, like atte...

Daryl,Dude, you've got some serious photography chops. Those photos are gorgeous!Dave

J,Here's a post on that topic:[msg=279762]Template for Rod Vial Adjustment[/msg]Dave

EF,"...the right question. . . ."Indeed. I often find myself in the position of not knowing enough to even ask an intelligent question. And on any sub...

Poor Little Guy!Actually, about two weeks ago, I took Charlie, a small Lhasa Apso, out for a midnight stroll in the moonlight. (We do that a lot.) As ...

But How Do You Do Subscripts and Funky Greek Letters?Bill,I nosed around the Innertubes quite a bit today looking for the rules of TeX. I couldn't fin...

But How Do You Do Subscripts and Funky Greek Letters?Mark,I noticed that too. There's also a difference between "Preview" and the actual Post.Dave

Shawn,The problem with Limits is that they can never be reached. Same thing with my understanding of some things.Dave

Cliff,There was nothing wrong with your explanation. The problem is that my skull is about a tenth of a US Survey Foot thick.Dave

MT,"To any point on a surface, we can construct a line tangent to that surface."Yes, we can construct any number of arbitrary tangent lines, but they ...

Cliff,Angels may be able to dance on the head of a pin, but where I learnt it all they told me that a line requires at least two points and a plane re...

Cliff,Stem is impenetrable. My every attempt to read him ended up with me fast asleep and drooling on my desk.Math is not the problem. Defining the no...

But How Do You Do Subscripts and Funky Greek Letters?Kris,OK, now we're getting somewhere! Apparently, there are about 900,000(hyperbole alert) differ...

Cliff,"...ellipsoid normal terminated by the semi-minor axis."I thought that was the point of ALL of those equations. And that is exactly why I don't ...