1. Penetration depth device: precision displacement measuring device. 

2. Needle insertion time control device: adjustable within 0-99 seconds, with time error less than ± 0.1 seconds. 

3. Needle insertion accuracy: 0.01mm. 

4. Maximum penetration depth: 40mm. 

5. Standard needle: the total weight of needle and needle bar is 2.5 ± 0.05g, which meets the specifications of GB / t4509 and t0604. 

6. Weight of penetration rod: 97.5g 

7. Flat bottom glass dish: it is a hard glass tank with a volume of more than 1.5L and a depth of more than 80mm. There is a sample container bracket inside, which can make it stable. 

8. Sample container: copper, cylindrical, flat bottom. The inside diameter of the sample container is 55mm and the depth is 35mm (applicable to samples with penetration less than 200). 

9. Lifting bracket: it can be adjusted freely to make the needle point align with the sample plane.