dermatograph

Conclusion: Observation of dermatograph is easy to operate and master and the result is stabile.This method is for suitable grass-roots unit and it is helpful to raise the quality of population.

皮纹简单易行、易掌握，不受时空限制，果稳定，是便于在广大基层推广一种智力方法，对提高人口有积极意义。