Question about Nikon ProStaff Laser 440 Rangefinder

2 Answers

Nikon Pro Staff 440 Range Finder

Battery is low, I bought a new 3 volt lithium battery but i can't figure out how to change the battery. Any Ideas or steps to reach success?? Thanks, Mike

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2 Answers

Re: Nikon Pro Staff 440 Range Finder

If you can't figure it out, you need to take it back to the store. When they ask you what's wrong, tell them you are too dumb to use it. It's not difficult. There's one opening on the entire unit. u\Use it

Posted on Sep 26, 2008

Re: Nikon Pro Staff 440 Range Finder

There is a silver quarter sized screw out cover on the battery compartment.  It has a slot so you can use a coin or screwdriver to remove the cover.

Posted on Oct 17, 2007

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Measurement is off approx. 4' to 5'. Any way to re-calibrate to have accurate measurements?

I didn't find the Prostaff laser 440 rangefinder on the website for, but I did find the 550 model. The specs follow:
  • Measurement Range 11-550 yds
  • Increment Reading 0.5/1 yds
  • Magnification 6x
  • Angular Field of View (Real)
  • Angular Field of View (Apparent) 34.9°
  • Viewfinder Display meters/yards
  • Eye Relief 18mm
  • Diopter Adjustment +/-4°
  • Power Source 1 CR2 Lithium Battery
  • Size (Length x Width x Height) 5.1 x 1.5 x 2.7 in
  • Weight w/o Batteries 6.3 oz
  • Objective Diameter 21mm
  • Exit Pupil 3.5mm
  • Supplied Accessories CR2 lithium battery.
I did not read that there is a recalibration for the unit, although a consumer might expect that. Has it ever been dropped to your knowledge?

The above link has contact information for service of the unit via telephone numbers.

Jul 23, 2010 | Nikon ProStaff Laser 440 Rangefinder

1 Answer

Need the proper tool for a nikon prostaff range finder

Harbor Freight has a kit that has them in it and most industrial tool supply companies have them. It's a security screw. there are many kits availably with an assortment of bits in them. Drill Master has a 100 piece kit that's pretty cheap. Item#91310

Oct 27, 2009 | Nikon ProStaff Laser 440 Rangefinder

1 Answer

Nikon ProStaff Laser 440 not working

Here is the address to send your rangefinder for repairs.
  • Nikon INC.
  • 841 Apollo St. Suite 100.
  • Elsegundo, CA 90245-4721
  • Attention: Repair Department
  • Phone (800) 645-6678.
I had the same issue with my Nikon Laser 800 rangefinder. I sent it in and they wanted $311.00 to fix it so I bought a new one for $300.00 off EBAY. Today I was missing around with my old rangefinder and noticed after I put the battery in I could hear something loose in the rangefinder. There is a little metal tang in the bottom where the battery goes that holds tension on the battery that was bent down. I bent it back up about 3/16" and put the battery back in, now it works fine.

Dec 01, 2007 | Nikon ProStaff Laser 440 Rangefinder

2 Answers

Nikon 440 pro staff range finder wont read distance

I just got mine to work. It was doing the same thing. I guess I re-set it. I figured there had to be some way to re-set it. So I pushed the mode button and the power button simultaneously for 30 second. Then it worked! Wooptidoo :)

Nov 01, 2007 | Nikon ProStaff Laser 440 Rangefinder

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