1. Introduction
The Proster IP65 Lensatic Sighting Compass (Model PST033) is a professional-grade, multi-functional navigation tool designed for outdoor enthusiasts, hikers, campers, geologists, and survivalists. Constructed with durable metal, it features a lensatic sighting system, a built-in clinometer for measuring slopes, and a fluorescent dial for clear readings in various lighting conditions. Its IP65 waterproof and shockproof design ensures reliable performance in challenging environments.
2. Product Features
- Durable Metal Construction: Strong metal casing protects the internal dial plate and components.
- Lensatic Sighting System: Allows for accurate bearing acquisition.
- Clinometer: Integrated tool for measuring slopes and heights, with a range of 0-90 degrees.
- Fluorescent Scale: The compass dial and markings glow in the dark for easy readability in low-light conditions.
- Spider Line: Reference line within the sighting window for precise measurements.
- Gradienter: A bubble level (horizontal) in a red circle ensures the compass is held flat for accurate readings.
- Plotting Scale: Measures distances on maps, with a 1:25000 scale.
- Gun Sight: Aids in locating directions accurately.
- Centimeters Graduated Scale: Clear 0-15cm ruler for general measurements.
- IP65 Waterproof Rating: Resistant to rain and splashes, suitable for use in wet weather (not for submersion).
- Shockproof Design: Built to withstand impacts and rough handling.



3. Package Contents
Upon opening the package, please ensure all items are present and in good condition:
- Proster IP65 Lensatic Sighting Compass (Model PST033)
- User Manual
- Carry Bag
- Lanyard

4. Setup and Initial Use
- Unpack: Remove the compass from its packaging and carry bag.
- Open the Compass: Fold open the metal lid and the sighting arm. The compass should be fully extended for use.
- Attach Lanyard: Secure the included lanyard to the compass for easy carrying and to prevent loss.
- Leveling: Before taking any readings, ensure the compass is held perfectly level. Use the built-in gradienter (bubble level) to achieve a horizontal position. The bubble should be centered within the red circle.
- Fluorescent Activation: For optimal glow-in-the-dark performance, expose the fluorescent dial to a light source for a few minutes before use in low-light conditions.
5. Operation
5.1 Taking a Bearing (Sighting)
- Hold the compass level at eye level.
- Look through the sighting lens (spider line) and align the gun sight with your target object.
- Read the bearing indicated by the red line in the sighting window. This is your magnetic bearing to the target.

5.2 Using the Clinometer (Measuring Slopes/Heights)
- Locate the clinometer scale on the back of the compass lid.
- Hold the compass vertically, aligning the edge with the object whose slope or height you wish to measure.
- Read the angle indicated by the clinometer needle against the scale.

5.3 Reading the Fluorescent Dial
The main compass dial features fluorescent markings. After exposure to light, these markings will glow, allowing you to read directions and bearings in dim light or darkness.

6. Maintenance
- Cleaning: Wipe the compass with a soft, damp cloth. Do not use abrasive cleaners or solvents.
- Storage: Store the compass in its carry bag when not in use to protect it from scratches and impacts. Keep it away from strong magnetic fields (e.g., magnets, electronic devices) which can demagnetize the needle or affect accuracy.
- Water Exposure: While IP65 rated for rain, avoid prolonged submersion in water. If it gets wet, dry it thoroughly before storing.
- Avoid Extreme Temperatures: Do not expose the compass to extreme heat or cold for extended periods, as this can affect its performance and durability.
7. Troubleshooting
- Inaccurate Readings: Ensure the compass is held perfectly level using the gradienter. Move away from any metallic objects or electronic devices that might interfere with the magnetic needle.
- Sticking Needle: Gently tap the compass to free the needle. If the problem persists, it might indicate internal damage or exposure to strong magnetic fields.
- Faint Fluorescent Glow: Ensure the compass dial has been exposed to a bright light source for a sufficient period before use in darkness.
8. Specifications
| Feature | Detail |
|---|---|
| Model | PST033 |
| Dimensions | 11 x 8 x 4.5 cm (approx.) |
| Weight | Approximately 0.398 kg (398 grams) |
| Case Material | Aluminum |
| Waterproof Rating | IP65 (Rain/Splash resistant) |
| Shockproof | Yes |
| Noctilucent Display | Yes (Fluorescent Scale) |
| Clinometer Range | 0-90 degrees |
| Origin | Mainland China |
9. User Tips
- The compass is well-suited for general hiking, camping, and navigation training due to its good accuracy and smooth operation.
- The sighting line and rotating bezel function smoothly, making it easy to read in daylight.
- For serious navigation, it is recommended to perform calibration checks periodically to ensure continued accuracy, as with most budget-friendly compasses.
10. Warranty and Support
For any questions, technical support, or warranty claims regarding your Proster IP65 Lensatic Sighting Compass, please contact the seller or manufacturer directly. Keep your purchase receipt as proof of purchase.