Replies

1. 
   MisterT | Jun 04, 2002 01:17am | #1

   It means that the max error over 100' will be 5/16" in either the + or - direction. But if you rotate the instrument 180 o and the error is in the opposite direction youwill get an error of 5/8 over 200'.

   BTW 5/16" per 100' seems like a lot most lasers are in the 1/16" to 1/8" range.

   My two cents worth, +or - a buck or two!

   Mr T

   Do not try this at home!

   I am a trained professional!

1. 
   Harborman | Jun 04, 2002 02:28am | #2

   Mr. T:   Thanks, I don't think this instrument is accurate enough for me.  I have a Pentax theodolite that I use for real accuracy, sometimes hard to work with alone but I love the accuracy.  Again Mr. T I appreciate the information.  Best Regards,  Dale Buchanan

1. 
   Piffin | Jun 04, 2002 04:47am | #3

   5/16" in 100' is a little sloppy, especially when you figure that the dot can be a quarter inch bib at that distance so you can add a little for operator error. Plenty of optical levels were used for years with accuracy ratings of 1/4"per100' though and God knows they had plenty of opp-errors too.

   Excellence is its own reward!

1. 
   bearmon | Jun 04, 2002 05:45am | #4

   I have a Nikon optical that claims a 1/32 or 1/16 error over 100', I can't remember which.  No slop with the beam either, nice sharp cross-hairs.  Of course it takes two to operate.  5/16 seems like a lot.  Bear

1. 
   OneofmanyBobs | Jun 04, 2002 12:23pm | #5

   The laser levels are handy in a kitchen or someplace

   like that. As far as a surveying instrument, not so good.

   Typical accuracy is 1/4 inch per 50 feet. Some better, some

   much worse. No way to make the dot smaller. In fact, they're

   more accurate if the dot is bigger. But they're handy for ####lot of things and don't need 2 people to use. They're not

   really a precision instrument like a transit. They're also

   a fraction of the price.