Meaning of telescope body identification
Each pair of binoculars has similar numbers: "8x32", "10x50" or "7x56", etc. the number before "X" represents the magnification. The magnification of the three telescopes is 8, 10 and 7 respectively. The number behind the multiplier represents the objective lens diameter of the telescope, in mm. The apertures of the three telescopes are 32mm, 50mm and 56mm respectively. In addition, some telescopes have similar words like "129m / 1000m", which refers to the field of view of the telescope. It means that at a distance of 1000, the range that can be seen with the telescope is a circle with a diameter of 129m.