First Use; Operation; Switching Illumination On/Off - TESTO 319 Instruction Manual

18

4. First use

4. First use
This chapter describes the handling steps required for first use of the product.
Setting t t he f f ocus o o f t t he e e yepiece
Point at an object in the room and and focus using the focussing ring.
5.

Operation

This chapter describes the handling steps carried out when using the product.
Using t t he f f lexible t t ube i i n t t he a a rea t t o b b e e e xamined:
Push the slide switch if illumination is required for a more exact
examination.
Set the focus by turning the ring to the left or the right.
Now inspect the object to be examined. If the working distance changes
during inspection, readjust the focus using the focussing ring.
Although the flexible tube is filled with thousands of fibers, it can be
repeatedly bent up to a maximum radius of 50 mm without being damaged.
Lamp can become hot after longer periods of use.
The lamp is fragile! Please be careful with it.

5.1 Switching illumination on/off

Switching i i llumination o o n:
Slide switch in position
Switching i i llumination o o ff:
Slide switch in position
.
.