What instrument for vertical measurement?

[Tom Del Rosso]

To determine the required height to install microwave radio dishes, I need
to find the heights of obstacles along the signal path, including trees. I
see that used surveying instruments go for over $500 on ebay, but I only
need vertical measurement. I get the horizontal from GPS and USGS topo
maps. What's a good instrument for this that doesn't do more or cost more
than necessary?


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[bestafor]

HiHo;
Try a Abney Hand level.



"Tom Del Rosso" <td_01@att.net.invalid> wrote in message
news:Bp4hg.226137$eR6.8677@bgtnsc04-news.ops.worldnet.att.net...

To determine the required height to install microwave radio dishes, I need
to find the heights of obstacles along the signal path, including trees.
I
see that used surveying instruments go for over $500 on ebay, but I only
need vertical measurement. I get the horizontal from GPS and USGS topo
maps. What's a good instrument for this that doesn't do more or cost more
than necessary?


--

Reply in group, but if emailing add another
zero, and remove the last word.

 

[Andrew Tweddle]

Tom Del Rosso wrote:

To determine the required height to install microwave radio dishes, I need
to find the heights of obstacles along the signal path, including trees. I
see that used surveying instruments go for over $500 on ebay, but I only
need vertical measurement. I get the horizontal from GPS and USGS topo
maps. What's a good instrument for this that doesn't do more or cost more
than necessary?


Theodolite with a graduated scale on the lenses.

Andrew