Konica Minolta cm-5 Instruction Manual page 48

<To measure a specimen>
2. When using the Petri Dish: Insert the Petri Dish
containing a specimen into the recess in the Target
Mask (for Petri Dish).
When using the Mini Petri Dish:
Insert the Mini Petri Dish containing a specimen into
the recess in the Target Mask (for Mini Petri Dish).
Then, carefully place the Zero Calibration Box over the
Mini Petri Dish containing the specimen, align the Zero
Calibration Box with the positioning groove on the
Target Mask (for Mini Petri Dish) and press down.
When using the Mini Petri Dish, the small amount of
specimen used may result in external light penetrating the
specimen and affecting measurements. For this reason, the
Zero Calibration Box should be used to cover the Mini Petri
Dish containing the specimen to block out external light
during measurements.
E46
Petri Dish
CM-A128