YSI 85 - Manual (Page 8)

Preparing the Meter Section 2
YSI, Incorporated Model 85 4
NOTE: On some models, the battery cover thumbscrew may be unscrewed by hand (a screwdriver
may not be required).
There is a small label inside each of the two battery-chamber sleeves. These labels illustrate the
correct way to install the batteries into each sleeve of the battery-chamber.
NOTE: It is very important that the batteries be installed ONLY as illustrated. The instrument will
not function and may be damaged if the batteries are installed incorrectly.