[Acoustics] Laser rangefinders - availability of a rangefinder cheaper and lighter than an Impulse- A followup and Test

[Lloyd T Brooks]

Mark and others, I ended up purchasing 12 Opti-Logic 400XTA rangefinders 
and tested their accuracy against a tagline.  Using a reflective "Shoulder 
Work Ahead" sign, all of the rangefinders were biased -5 to -7 feet when 
tested at 100, 150, 200, and 250 feet.  Using the reverse side of the sign 
yielded distances that were within +/- 2 ft of the true distance.  Same 
results with a smooth concrete wall.  It appears that a highly reflective 
surface "fools" the rangefinder with the extra light. 
Tim
-------------------------------
L. Timothy Brooks
U. S. Geological Survey, WRD
425 Jordan Rd
Troy, NY 12180-8349
Phone# 518/285-5644
Fax# 518/285/5601
ltbrooks at usgs.gov



Lloyd T Brooks <ltbrooks at usgs.gov> 
Sent by: acoustics-bounces at simon.er.usgs.gov
09/08/2005 02:12 PM

To
Mark E Jones <mejones at usgs.gov>
cc
acoustics-bounces at simon.er.usgs.gov, acoustics at simon.er.usgs.gov
Subject
Re: [Acoustics] Laser rangefinders - availability of a  rangefinder 
cheaper and lighter than an Impulse







Mark and others,  Opti-logic has a new rangefinder, 400XTA, which has an 
accuracy of 0.5 yards.  The display can be set to read in ft. It's not yet 
available from their distributors but you can order it directly from 
Opti-Logic for $287.96.  The phone# is 888/678-4564 and ask for Loretta. 
The website is www.opti-logic.com. 
-------------------------------
L. Timothy Brooks
U. S. Geological Survey, WRD
425 Jordan Rd
Troy, NY 12180-8349
Phone# 518/285-5644
Fax# 518/285/5601
ltbrooks at usgs.gov 


Mark E Jones 
Sent by: Mark E Jones 
09/08/2005 11:50 AM 


To
Lloyd T Brooks/WRD/USGS/DOI at USGS 
cc
acoustics-bounces at simon.er.usgs.gov, acoustics at simon.er.usgs.gov 
Subject
Re: [Acoustics] Laser rangefinders - availability of a rangefinder cheaper 
and lighter than an Impulse









Tim, 
Try these. We have been using these for about 2 years and are very 
reasonable.  
http://www.opticsplanet.net/optilogic-laser-rangefinder-600xl.html 
Mark 

Mark E. Jones
U.S. Geological Survey
439 Hepburn St.
Williamsport, PA 17701
570-323-7127 x404
570-323-2137 fax
mejones at usgs.gov 

Lloyd T Brooks <ltbrooks at usgs.gov> 
Sent by: acoustics-bounces at simon.er.usgs.gov 
09/08/2005 09:27 AM 


To
acoustics at simon.er.usgs.gov 
cc

Subject
[Acoustics] Laser rangefinders - availability of a rangefinder cheaper and 
lighter than an Impulse











Has anyone found a rangefinder that has +/- 1 ft accuracy and is lighter, 
smaller and cheaper than an LaserTech Impulse 100?  We use rangefinders 
for ADCP and wading (<300 ft wide sections) measurements. 
Thanks, Tim 
-------------------------------
L. Timothy Brooks
U. S. Geological Survey, WRD
425 Jordan Rd
Troy, NY 12180-8349
Phone# 518/285-5644
Fax# 518/285/5601
ltbrooks at usgs.gov_______________________________________________
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