PARFOCAL
A term applied to objectives and eyepieces when practically no change in focus has to be
made when an objective of one power is substituted for another. The DIN objectives on
SILVER150 Series Microscope are parfocaled at the factory to a standard 45mm distance, so
that only a slight turn of the fine adjustment is required when a change is made from a lower
to higher power.
WORKING DISTANCE
The distance from the lens of the objective to the cover slip on the slide, when the specimen
is in focus.
CORDLESS OPERATION (Cordless models)
The rechargeable battery should be fully charged for approximately 8 hours before the initial
use. It can be charged by using the 4.5 volt A/C adapter included with the microscope. The
battery can be used to power the illumination system for approximately 40 hours. If the
microscope is used in the same location, the A/C adapter can remain plugged-in without
damage to the battery or recharging system.
A battery power indicator meter is located in the front of the base. Each blue LED light
indicates the level of remaining battery power. When the battery is fully charged, all 5 LED
lights will be illuminated. The battery will need to be recharged when there is only 1 illumi-
nated LED remaining on the meter.
SILVER
150
SERIES
| 09
IMPORTANT MICROSCOPY TERMS
IMPORTANT MICROSCOPY TERMS
SILVER
LINE
