Question about Nikon ProStaff Laser 440 Rangefinder

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Nikon ProStaff Laser 440 not working

New Battery. Still has blank screen. Need to know where to send for repair

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Re: 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.

Posted on Mar 13, 2008

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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

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

2 Answers

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.

Oct 12, 2007 | Nikon ProStaff Laser 440 Rangefinder

1 Answer

Unit "cannot measure" at any distance

Had the same problem... Pushed the mode button and the power button simultaneously for 30 seconds, then it worked again...

Oct 18, 2006 | Nikon ProStaff Laser 440 Rangefinder

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