Measuring distance: This is the main indicator of the laser ranging telescope, which refers to the long distance that the telescope can measure. The measurement distance of the telescope is generally 400-2000 meters, which refers to the straight-line distance between the measurement position and the measurement target. There is also an important indicator, horizontal distance (the two concepts must not be confused). The measurement distance of the laser ranging telescope is generally theoretical and will be affected by the weather. So when choosing a rangefinder, in principle, you should choose a laser rangefinder telescope that is about 20% farther than your actual measurement distance. Measuring distance is an important factor affecting the price of telescope laser rangefinders.

**2. Whether the height can be measured:**

Many rangefinders have this function, so this rangefinder can also be called an altimeter. Another concept of height measurement is to measure the height of the target (height difference measurement). These two concepts must not be confused. At present, the main brands that can measure height are Tuyad and Orfa. The Nikon 1000 AS can also measure height, but it cannot measure angle. No doctor can measure height for all models. The price of the model that can measure the height will be more expensive than the model without this function.

**3. Can you measure the angle:**

Many rangefinders also have this function, so this rangefinder can also be called a goniometer. Many models of Tuyad and Alfa have this function, and all models of Nikon cannot measure angles. Some models of Dr. Neng can measure angles. Whether the angle can be measured is another major factor affecting the price of telescope laser rangefinders.

**4. Can you measure the height of the target (measure the height
difference):**

Different from the concept of height measurement mentioned above, it refers to measuring the height of the target itself, which is a function of high-end rangefinders. At present, Tuya only SP1500H has this advanced function. However, among the new products released by Olfa in Germany in May 2012, there is a rangefinder with this function. Neither Doctor Noh nor Nikon has such a model.

**5. Can you measure the horizontal distance:**

The above-mentioned measurement distance refers to the linear distance from the measurement location to the measurement target, and the horizontal distance refers to the horizontal distance from the measurement location to the measurement target. The distance between the two is different. This is a function of high-end rangefinders.

**6. Can continuous ranging:**

Continuous ranging is useful in many situations, so this feature is also very important.

**7. Whether continuous angle measurement can be carried out:**

The function of continuous angle measurement can be found in some high-end laser ranging telescopes. Continuous angle measurement refers to continuous angle measurement without triggering the infrared emitting lamp. Currently only Tuyad sp 1500h has this function.