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1. The two-dimensional image measuring instrument should be placed in a clean and dry room (room temperature 20 ℃ ± 5 ℃, humidity is 60% lower, to avoid moldy parts, metal parts rust, dust and debris falling into the instrument rails, affecting the imaging of the optical system Clarity and measurement accuracy of the instrument.

2. The surface of the two-dimensional image measuring instrument should be kept clean and cannot be touched by hand. If there is dust on it, it can be brushed off with a soft brush. If there are many surface stains, use it with a small amount of alcohol and ether mixture.

3. The screen of the secondary image measuring instrument is a matte surface. Try not to touch it with your hands when using it. If you use it for a long time, there will be dust and oil stains on the projection screen, which affects the clarity of the image. You can use clean wet gauze dipped in a little neutral detergent to remove the whole Wipe the projection screen gently.