Bob- I think you'll probably agree with my generalization after having several surgeries myself, that there is no such thing as minor surgery...by the way, what anesthetic did you end up with? -Don
Date: Wed, 8 Apr 2009 17:15:03 +0000 From: [email protected] To: [email protected] Subject: [ENTS] Re: Nikon Forestry 550- Sweet! Vic, Will, Don, Ed, et al: Attached is an Excel spreadsheet that shows 25 tests of the accuracy of the Forestry 550's laser with comparisons to the TruPulse 200 and TruPulse 360. All in all, I think the 550 performed quite well. I've included the average of the absolute values of the deviations of each instrument from the respective tape measured distances and also thrown in the standard deviations. At greater distances, the 550 seems to trail off in performance, but it is still good enough and well within advertised accuracy specification. The TruPulse 360 is a super instrument, but it also costs $1,600. More tests tomorrow. For today, I'm pooped. It is amazing how quickly one tires out after surgery with only the smallest amount of moving around. Bob ----- Original Message ----- From: "Victor Shelburne" <[email protected]> To: [email protected] Sent: Tuesday, April 7, 2009 1:57:06 PM GMT -05:00 US/Canada Eastern Subject: [ENTS] Re: Nikon Forestry 550- Sweet! Bob: Very cool. Glad to know you have approved it as I have been holding off waiting for a good review. Vic Shelburne SC Big Tree Program From: [email protected] [mailto:[email protected]] On Behalf Of [email protected] Sent: Tuesday, April 07, 2009 12:47 PM To: [email protected] Cc: Neal, Haven Subject: [ENTS] Nikon Forestry 550- Sweet! ENTS, My brand new Nikon Forestry 550 arrived this morning and I just completed going through all its features. I give the instrument two solid thumbs up. It is a real hypsometer that can compete with the LaserTech TruPulse 200 for half the price. The 550 doesn't compete with the TruPulse 360, which has added functionality. I am thrilled to report that the Forestry 550 does the math right. It has a single point mode and a double point mode. In the single point mode, you shoot a target and the 550 returns the linear distance of the point, vertical distance (height) of the point, horizontal distance of the point, and angle of the point. The double point mode measures the full height of the target tree. You shoot the crown an then the base (or vice versa) and the 550 returns the full height (vertical separation of the two points) and several other returns and shows them in an external LED that is easy to read. The 550 has two target acquisition modes: 1st target accessed and fartherest target accessed. The latter mode is appropriate to shooting to the top of a tree with a cluster of branches. It is easy to switch between the modes. Distances can be displayed in yards, meters, or feet. Angles are always in degrees. Sweet! This is the instrument for measurers who don't want to fuss with the math, but who want the internal process to produce the right answer in contrast the manufacters who mindlessly program in the tangent method for tree height determination, when they could have just as easily done it right. I'll provide more information over the next few days, but as of this point my $350.00 hypsometer is a very, very good buy. Nikon or their Chinese manufacturers must have been paying attention to ENTS. Better late than never. Bob _________________________________________________________________ Rediscover Hotmail®: Get e-mail storage that grows with you. http://windowslive.com/RediscoverHotmail?ocid=TXT_TAGLM_WL_HM_Rediscover_Storage1_042009 --~--~---------~--~----~------------~-------~--~----~ Eastern Native Tree Society http://www.nativetreesociety.org Send email to [email protected] Visit this group at http://groups.google.com/group/entstrees?hl=en To unsubscribe send email to [email protected] -~----------~----~----~----~------~----~------~--~---
