Instruction manual

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25.OPTIONAL ACCESSORIES

The following are optional accessories which are sold separately from the OS.

CPower supply and target optional accessories: "23. POWER SUPPLY SYSTEM", "24. PRISM

SYSTEM".

I Plumb bob

The plumb bob can be used to set up and center

the instrument on days when there is little wind.

To use the plumb bob, unwind its cord, pass it

through the cord grip piece as shown in the figure

to adjust its length, then suspend it from the hook

attached to the centering screw.

I Tubular compass (CP7)

Slide the tubular compass into the tubular com-

pass slot, loosen the clamp screw, then rotate the

top part of the instrument until the compass nee-

dle bisects the index lines. The telescope's face 1

sighting direction in this position will indicate mag-

netic north. After use, tighten the clamp and

remove the compass from the slot.

• The tubular compass is susceptible to the influence

of nearby magnets or metal. Such influence could

cause it to fail to accurately indicate magnetic north.

Do not use magnetic north as indicated by this

compass for base line surveying.

I Telescope eyepiece lens (EL7)

Magnification: 40X

Field of view:

1° 20

Tubular

compass slot