Is the collection of Wilt classics and musical instruments of great value?

Wilt's classics and musical instruments are of little value. According to relevant data, theodolite is the mechanical part of telescope, which enables the telescope to point in different directions, but its collection value is not high, and it increases by 100 yuan a year. Theodolite is a measuring instrument designed according to the principle of angle measurement, which is used to measure horizontal angle and vertical angle.