Lighted bar code leveling rods

john-hamilton · 2017-11-21T19:09:00Z

We do leveling indoors (tunnels) a few times a year. Sight lengths are not long (about 30 meters max), and a LED "stick" light works well, no problem with the level reading the rod.Now we have an outdoor project that must be done between midnight and 5 AM, 3.6 miles along a highway (which will be closed). I am wondering how well the LED light might work at the longer sight lengths, like 50 to 60 meters. Another option would be have a person in a vehicle shining the headlights on the rod (highway will be closed down), or maybe using a high power spotlight from the vehicle. A third option is to get an illuminated rod, but they are not cheap (~$1800), although they would be useful on our monitoring projects in the tunnels.

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brad-ott

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I, for one, do appreciate you "thinking out loud" here.?ÿ I am enjoying watching this thread without having to "think" myself.?ÿ Sometimes it takes days of chewing on a problem like this before a solution presents itself.

Posted : December 18, 2017 9:45 am

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Lighted bar code leveling rods

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