(4) Read the gamma where the straight-line portion of the characteristic curve intersects the
vertical scale of the gammeter (figure 44).
Figure 44.
(5) Record that value in the space beside GAMMA on the sensitometric plot sheet.
EXERCISE
8.
The arrow on the GAMMETER must be placed where on the characteristic curve, when reading
the gamma.
9.
Where on the GAMMETER do you get the GAMMA readout on a particular characteristic
curve?
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