. Deep borehole surveys and problems. Boring. Fig. 34.—Heine's stratameter (origi- Fig. 35.—Heine's stratameter (modi- nalform). fied form). on the rinsing pump manometer. Thus the ball with the water presses down pin I through its friction socket to actuate eccentric k on rod h and so arrest the needle. This instant of arrest can be read on the pump manometer by a visible back kick of the indicator, because then the water gets a freer passage through the channel o to the floor of the borehole. The whole process lasts only a few minutes. Now the rods including the stratameter, core barrel and
. Deep borehole surveys and problems. Boring. Fig. 34.—Heine's stratameter (origi- Fig. 35.—Heine's stratameter (modi- nalform). fied form). on the rinsing pump manometer. Thus the ball with the water presses down pin I through its friction socket to actuate eccentric k on rod h and so arrest the needle. This instant of arrest can be read on the pump manometer by a visible back kick of the indicator, because then the water gets a freer passage through the channel o to the floor of the borehole. The whole process lasts only a few minutes. Now the rods including the stratameter, core barrel and core are lifted out and the north direction of the needle transferred to the core. The above apparatus has a whole series of structural modifications, as for instance in Fig. 35. Here the arresting. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Haddock, M. H. (Marshall Henry). New York, McGraw-Hill
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