Description
The Leica CRF 2400-R Rangemaster is a high-performance, compact laser rangefinder designed for precision and ease of use in the field. It delivers quick and accurate distance measurements up to an impressive 2400 yards, making it ideal for hunters and shooters who require reliability under various terrain conditions. Its LED display with automatic brightness control ensures that readings are crystal clear, even during low-light situations, such as dusk or dawn.
This rangefinder stands out with its Equivalent Horizontal Range (EHR) feature, providing angle-compensated distances for ethical shots up to 1,200 yards. This function is invaluable to rifle scopes users, offering them the data needed to make challenging uphill and downhill shots with confidence. Rapid measurements are available through its Fast Scan Mode, updating distances in half-second intervals – a critical function in fast-moving or time-sensitive situations.
Constructed with Leica's high-quality optical glass and European engineering, the Rangemaster CRF 2400-R prioritizes both performance and durability. It operates with a Class 1 eye-safe laser, ensuring safety for users. Weighing in at only 6.7 ounces, this rangefinder is both lightweight and easy to maneuver, fitting seamlessly into your hunting gear without adding unnecessary bulk.
Features
- ADVANCED RANGE: Accurate measurements up to 2,400 yards for long-distance targeting.
- PRECISION EHR: Angle-compensated distance readings ideal for challenging terrains up to 1,200 yards.
- OPTIMAL VISIBILITY: LED display with automatic brightness control for clear reading in low-light conditions.
- LIGHTWEIGHT DESIGN: Ultra-portable at only 6.7 ounces, perfect for on-the-go use.
- QUICK SCANNING: Swift 0.5-second measurement updates in Fast Scan Mode.
- EYE-SAFE TECHNOLOGY: Built with a Class 1 laser that's safe for eyesight.
- QUALITY OPTICS: Premium Leica optical glass for clear, crisp viewing.
- FLEXIBLE MEASUREMENTS: Option to toggle between yards and meters for personalized usage.
Specifications
| Specifications | Details |
|---|---|
| Weight | Approx. 6.5 oz |
| Dimensions | Width: 4.1", Height: 3.3", Length: 6.1" |
| Eye Relief | 15 mm |
| Field of View | 347 ft / 115 m |
| Angular Field of View | 6.5° |
| Exit Pupil | 3.4 mm |
| Twilight Factor | 13 |
| Range | 2,400 Yards |
| Objective Lens Diameter | 24mm |
| Laser | Class 1 Eye Safe |
| Angle Compensation | EHR: 1,200 Yards |
| Measurement Units | Meters and Yards |
| Beam Divergence | Approx. 0.5 x 2.5 mrad |
| Battery Type | 1 x 3 V/Lithium-type C2R |
| Monocular Details | Magnification: 7x, Objective: 24mm |
| Measuring Time | 0.5 sec |
| Magnification Range | 7x |
| Item Condition | New |
| UPC | 4022243405462 |
| MPN | 40546 |
| Product Type | Shop All Laser Range Finder |
WHAT'S IN THE BOX?
Included in the box with the Leica CRF 2400-R Rangemaster 40546 is everything needed to start ranging immediately:
- Leica CRF 2400-R Rangemaster
- Carrying Strap
- Cordura Case
- Battery
- User Manual
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Optics Knowledge Center
Understanding Rifle Scope Basics
Magnification
Magnification refers to how much larger an object appears through the scope compared to the naked eye. Fixed power scopes have one magnification setting, while variable power scopes offer a range (e.g., 3-9x).
Objective Lens
The objective lens is the front lens that gathers light. Larger objective lenses (measured in mm) gather more light, providing brighter images in low-light conditions but add weight and require higher mounting.
Reticle
The reticle (crosshair) is the aiming point inside the scope. Modern scopes offer various reticle designs, from simple duplex crosshairs to complex ballistic reticles with holdover points for different distances.
Adjustments
Rifle scopes have turrets for windage (horizontal) and elevation (vertical) adjustments. These are measured in MOA (minutes of angle) or MRAD (milliradians) and allow precise aiming adjustments.
Proper Scope Mounting Guide
Select the Right Rings & Base
Choose rings that match your scope's tube diameter (typically 1", 30mm, or 34mm). Select a base compatible with your rifle's receiver. For heavy-recoiling rifles, opt for stronger mounts.
Install the Base
Clean the receiver and base thoroughly. Apply a small amount of blue Loctite to the screws. Attach the base to the receiver and torque the screws to manufacturer specifications.
Attach the Rings
Attach the bottom halves of the rings to the base. Place the scope in the rings and loosely attach the top halves. Don't fully tighten yet.
Set Eye Relief & Level
Position the scope for proper eye relief (3-4 inches) in your normal shooting position. Ensure the reticle is level using a scope leveling tool. Once positioned correctly, tighten the rings evenly in a cross-pattern.
Scope Zeroing Tips
Start Close
Begin zeroing at a shorter distance (25-50 yards) to ensure you're on paper before moving to your desired zero distance (typically 100 yards).
Use a Stable Rest
Always zero your rifle from a stable shooting position using a bench rest, sandbags, or a shooting rest to eliminate as much human error as possible.
Fire Groups
Fire 3-shot groups before making adjustments. This provides a more accurate representation of where your rifle is shooting than single shots.
Make Deliberate Adjustments
Know your scope's adjustment values (typically 1/4 MOA per click). If your group is 2 inches low at 100 yards, you'll need to adjust up 8 clicks (for a 1/4 MOA scope).
Confirm Your Zero
After making adjustments, fire another group to confirm your zero. Repeat the process until your point of impact matches your point of aim.
Document Your Settings
Once zeroed, record your settings including distance, ammunition used, and environmental conditions for future reference.
Optics Maintenance & Care
Cleaning Lenses
- Start by blowing or brushing away loose particles
- Use a lens pen or microfiber cloth for fingerprints
- For stubborn dirt, use lens cleaning solution (never household cleaners)
- Clean with gentle circular motions from center outward
Protecting Your Optics
- Always use lens caps when not in use
- Store in a dry place with silica gel packets
- Avoid extreme temperature changes
- Use a quality scope cover in harsh conditions
Regular Maintenance
- Check and tighten mount screws periodically
- Inspect O-rings and seals for damage
- Verify zero after rough handling
- Clean the exterior with a damp cloth
What to Avoid
- Never use fingers to touch lenses
- Avoid paper products (tissues, paper towels) on lenses
- Don't use acetone, alcohol, or household cleaners
- Never disassemble your scope (voids warranty)