Usage Precautions - Pentax W-821NX Basic Instruction Manual

• Do not remove the handgrip without good reason. If it does come off, be sure to attach it
securely to the instrument with screws. If it is not fastened securely, the instrument may fall
when you grasp the handgrip, leading to possible injury.
• Do not short the poles of the battery or charger as there is a risk of injury or fire.
• Do not touch any fluid which may leak from the battery as there is a risk of chemical burn
injury or reaction.
• Do not insert or remove the electric plug with wet hands as there is a risk of electric shock.
• Do not use the case to stand on as it is slippery and unstable and may cause you to fall,
resulting in possible injury.
• Be sure the tripod itself and the instrument on the tripod are both installed securely as inse-
cure installation may cause the tripod to fall over or the instrument to drop, resulting in pos-
sible injury.
• Do not carry the tripod with the metal shoe pointing toward another person as it may injure
him/her.
• The instrument contains a rechargeable battery and a battery charger.
• It may be illegal to dispose the battery at the end of its useful life.
• Check with your local solid waste officials for details for recycling.

[Usage precautions]

Surveying instruments are high-precision instruments. In order to assure that the Electronic Total
Station W-800 series product which you have purchased will provide long-lasting maximum per-
formance, the precautions in this manual must be followed. Be sure to follow these instructions
and use this product properly at all times.
[Solar observation]
WARNING
Never view the sun directly using the telescope as this may result in loss of sight.Never point the objec-
tive lens directly at the sun as this may damage internal components.When using the instrument for
solar observation, be sure to attach the specially designed solar filter (MU64) to the objective lens.
[Laser beam]
Do not stare into laser beam. W-800 series is a Class IIIa (3R) Laser product.
[EDM axis]
The W-800 series EDM is the red visible laser beam and the beam diameter is very small. The
beam is emitted from the objective center and the base plate center hole. The EDM axis is
designed to coincide with the telescope sight axis (but both axes may deviate slightly because
of intense temperature changes and a long time lapse).
[Target constant]
Confirm the Target Constant of the instrument before measurement.
If a different constant is to be used, use the correct constant of the target. The constant is stored
in the instrument's memory when turned off.
3