you had some replies to your first post, at :My reply was as follows- on Ebay they show up about 2-3 times a year; last one sold on May 13th 2012 for ...

On Ebay they show up about 2-3 times a year; last one sold on May 13th 2012 for $1700 plus $100 shipping (if to the US)- was sold by a UK seller (who ...

You don't have your email address available via the web forum, so I can't email you directly - but I may be interested if you can contact me at drumm...

Stephen and Antcrook are correct- this is at the western end of the island of Kwajalein, near the telemetry hill called "Mt Olympus" (which is the hig...

Good guess... but not Cape Canaveral.

Jeff,I'd like to purchase a Kern DKM-1 and the Kern NK3 level- I have emailed you directly.Thanks!Nathan Drummond

I'm interested in this, have PM'd you. -Nathan Drummond

I'll try to dig up a picture of the US Army Wild accessory kits (there were a couple different styles).The more common one came in a custom fitted oli...

Wild T4 theodoliteWould an interested person be able to attend your class on the date that you pull out the T-4 and BC-4 to display for your students?...

In case anyone is unfamiliar with it, I have to give credit to - and highly recommend - the Wild-Heerbrugg.com website, (www.wild-heerbrugg.com). Th...

Ralph, you're correct- I made a mistake; the ABLE used the old-style T-2 while the North-Seeking Gyroscope (2nd version of the SIAGL) used the T-16.

Below is a quick survey of Inertial Surveying/ Positioning Systems used by the US Military; US DOD azimuth finding gyros and theodolites are a particu...

The illumination for the T-2 reticle comes from the vertical circle light path- - is the vertical path illuminated bright enough? (you can hold a fla...

see this publication, "Field Astronomy for Surveyors"in addition one can start by downloading the 2012 Ephemeris Tables... Or cut & paste