Out of curiosity, what is the diameter of the shaft and why do they want two points at the bottom? First image I got from the OP is a storm manhole ...

TTT

I posted this on Thursday, but it needed an assist to display today. Thank you, Wendell.

@ColdAndHungry My sincere condolences on the passing of your father. My father passed a little over a year ago and not a day goes by that I don't thi...

My $0.02 is that it would simplify the notifications feature.

Still not fixed, Wendell.

THANK YOU, Wendell. Well stated as usual.

I'd be surprised, Bruce if you didn't check the Kp index today. Everything is fine until the next CME hits later today or tomorrow! 🙂

Actually, it is still available, but buried somewhere in my storage locker. I know that Wendell has a "new" policy of requiring photos. It will likely...

I am interested in the Leica precision prisms if you are willing to sell them separately. If so, leave a reply and I'll post my contact information. E...

I'd be interested in seeing the alphas of the new geoid and DOV grids just to see what I might expect up in the Front Range.

My suggestion is spaceweather.com. Their current forecast is: SOLAR RADIATION STORM IN PROGRESS: An S2-class solar radiation storm is in progress on F...

Man, HC. I don't know what to say or do other than to pray for your full recovery. We both know how volatile and unpredictable a bull can be. DAMN IT!...

I know this will come as a shock, but I would suggest you look at placer mineral surveys where some of the lines are (or intended to be) aliquot lin...