NAD 27 or 83

I would quess 83, but see if you can find some metadata on it somewhere.

Try this:

'Pan' down to the Southwest Corner of a quad, and read the USGS metadata there. It will tell you what Datum the Quadrangle was "drawn" expressed in originally. There may (in recent quads) be 'dashed' Grid Ticks near each corner of said Quadrangle.

NEW quads (NAD83) often have NAD27 'dashed' ticks near each corner (of the actual Mapped area), Quadrangles published after about 1986 that are expressed in NAD27, will have NAD83 'dashed' Grid Ticks near each corner. OLD Quadrangles will NOT have any NAD83 data on them at all.

Now 'PAN" up to the Southwest Corner of the actual Map (which will be an even 7'30" of Latitude and Longitude (unless you are looking at a 15 minute quad), and see WHICH "TICK" is an even 7'30"

Loyal

I have the 2004 version. I can go to map display then units and switch back and forth between the two.

Thanks. Found the toggle between the two.

I have the Delorme Topo Tools Plus (2000) and the Northern Texas Region 3 disk

In the menu on the right side of the screen there is dropdown menu box "Datum:" where I can choose between
WGS84
NAD 27
OOH - Old Hawaiian

Some versions have NAD83 choice

Between this and Google Earth I preplan my traverse routes and choose the sites of my control points before I go the property.

It is pre XP and I have to print everything to a pdf for hard copies. It is either this or pull out the old dot matrix and load a slower print driver.

B-)

The programs usually allow to get the information in either data base. I have DeLorme Topo USA 6.0, 9.0 and 10.0. All allow you to switch between the different NADs.

B-)

> The programs usually allow to get the information in either data base. I have DeLorme Topo USA 6.0, 9.0 and 10.0. All allow you to switch between the different NADs.

Oooh boy! I hate when my nads get switched. :excruciating:

(sorry... couldn't resist)