Nikon Prostaff 3 6×21 Rangefinder How to Use? – Everything You Need to Know with FAQs, Tips, & More

People often ask, how to use Nikon Prostraff 3 6×21?

Let’s find out!

How to Use Nikon Prostraff 3 6×21?

To use the Nikon Prostaff 3 first insert the battery into the battery compartment. Now follow these steps.

Step 1 – Rubber Eyepiece Cup

Users using eyeglasses should roll up the rubber eyepiece cup before using it.
You don’t need to roll up the rubber eyepiece cup for use if you don’t use glasses. 

Step 2 – Adjusting the Diopter

To acquire a clear image on the LCD, adjust the diopter.

First, counterclockwise turn the diopter adjustment ring until it comes to a complete stop. As you glance through PROSTAFF 3, turn on the power to enable the LCD.

To focus the display, turn the diopter adjustment ring clockwise. You might not be able to focus on your subject if the diopter is not adjusted to match your eyesight.

The Nikon Prostraff 3 is a high quality spotting scope designed specifically for bird watching. It has a magnification range from 4X to 60X and a field of view of approximately 180 degrees. This scope is ideal for viewing birds at close quarters, and it comes with a carrying case too.

Step 3 – Measuring

All symbols are shown in the LCD panel when the POWER button is depressed and held down. The most recent setting is visible once you take your finger off the POWER button.

The LCD panel might show the most recently used setting if you temporarily press and release the POWER button without displaying all of the symbols. There is no malfunction or other issue with this.

Step 4 – Displaying distance

The PROSTAFF 3 has a system for distant target priority. The PROSTAFF 3 will show the distance to the farthest target on the LCD panel when different results from a single measuring operation are obtained. while calculating the size of a tree in front of a house.

Note: If you want to know a complete guide about rangefinder click HERE.

Nikon Prostaff Features

Single Button Operation

A laser rangefinder that automatically shuts off after eight seconds to conserve energy.

Note: If you want to gain information about How to Use West Marine Rangefinder Reticle 7×50 click HERE.

TruTarget Ranging System

A gun that ranges accurately in different environments.


Waterproof and fogproof housing is built to withstand light rainfall and humidity.

Note: If you want to know How Use 19TH Century Rangefinder click HERE.

Compact Size

The ProStaff 3 is a lightweight knife that fits easily into your pocket or pack. It weighs less than 7 ounces.

Note: If you want to know Leica LRF 1200 Rangefinder 2002 Model click HERE.


This prism lens is used to magnify images. It is made up of six prisms. It has an objective diameter of 21mm. It has a field of view of 315 feet at 1000 yards. It has a viewing angle of 6 degrees.

It has a metering range of 11-550 yards.


It uses CR2 batteries.


It weighs 6.3 ounces without batteries. It comes in a box measuring 6.5 by 5.1 by 3.9 inches.

nikon prostaff 3 6x21 rangefinder how to use

Nikon Prostaff 3 6×21 Rangefinder How to Use?


We hope that this article was helpful. If you have any queries feel free to reach out in the comments section below.

If you want to know more information about rangefinder click HERE.


  • John Moses

    John is the Editor in Chief here at The Outdoor Stores. His area of expertise ensures that there is no one better to suggest which rifles are most suitable for your hunting experience. He is also available for you to contact him personally to discuss the types of animals you want to hunt and the terrain you will be hunting on. Feel free to read his posts for expert opinion on Rifles, Scopes, Rangefinders, Bonoculars and Monoculars.

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