Do NOT buy a cheap one. I have a black and decker. Decent unit, or so I
Can't see the lines in sunlight.
What REALLY sucks though is that it's not really level! Over 30' it's about
4" lower on one side than the other.
I really like it, in fact I'm hooked on them. Gonna have to go find a
really good one though. And test it well before buying it.
(509) 982-2181 Equipment sales
(408) 907-6910 (Vonage) Consulting services
42846865 (icq) And I run my own wisp!
22.214.171.124 (net meeting)
----- Original Message -----
From: "David Gilbert" <firstname.lastname@example.org>
To: "Dale Martin" <email@example.com>
Sent: Tuesday, November 28, 2006 8:54 AM
Subject: Re: [TowerTalk] Plumbing a Tower
> Hi, Dale.
> I don't have a tower up yet (planning one for this coming spring), but I
> would definitely vote for the laser. My wife and I have been building
> our own 4500 sq ft home for the last four years and one of the best
> investments I ever made was a really good self-leveling 5-beam laser.
> There were times I got lazy and tried using a plumb bob instead of
> walking a hundred feet to grab the laser, and every time it was a mistake.
> I would either buy an inexpensive laser level and fixture it to point
> vertically from the center of the tower base, or I'd check around to see
> if anyone locally in the construction trades would let you borrow a
> professional one. My Pacific Laser Systems PLS-5 (a new one sells for
> less than $350 now on eBay) is rated to have an accuracy of 1/8 inch at
> 100 feet ... can't beat that. It self levels so you just position it
> with the downward beam pointed to the center of the tower base and the
> upward beam will set your target up the tower.
> Dave AB7E
> Dale Martin wrote:
>> I played around on the other day doing some mainteance. I made up a
>> jig out of string to suspend between the three legs of my Rohn 25G. I
>> looped and loosely tied one string to one leg. I tied the other end of
>> string to the horizontal brace directly across from that leg and halfway
>> between the two other legs. I did the same for the other two legs and
>> strings. The point at which the strings all crossed each other is
>> to be the center of the tower...right?
>> I may have done this all wrong. I read N4KG/K7LXC's comments about
>> a tower. I just used a deep 1/2" socket as my weight and nylon twine as
>> line. Way too light compared to N4KG's #20 wire and 5 lb. window sash
>> weight. I haven't yet found a day since hanging the line where the wind
>> light enough to even let the string hang anywhere near the center even
>> down from where it's hung.
>> I also think maybe I should do the plumb thing in stages -- in my case,
>> tower is 70' and I have two sets of guys. Should I plumb from the lower
>> of guys to get that portion of the tower plumb, then plumb from the upper
>> set of guys to the lower set? The plumb line would be shorter and maybe
>> less influenced by any wind.
>> Has anyone tried a laser? Seems like it would be easy to make up a laser
>> target jig to place through the tower, then, on the ground, use a laser
>> the center of the tower and aligned to the vertical. Anyone done that?
>> Comments? Suggestions?
>> Dale, kg5u
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