device for the determination of sex in the troux sliding drilling

摘要

the invention refers to a device for determining alunecarii layers in the probe.in the determination with which accuracy of locomotion in a probe hole layers and displacement velocity layers.it is composed of some elements provided with a semi-circular modulated wall made of the lead which, together with a wooden wall bordering a space inside,the modulated elements between them being carried out with the help of steel pipes which span some necklaces set on the wall of wood, and fixing elements modulated recalled,inside the probe is executed with the aid of feathers and of palplanse wood, modulated, feathers could be extracted with the help of cables.