Note:
Be sure that the leveling rods are almost vertical.
It is recommended to position the level almost in the center of points A and B to
avoid influence by the axis of vision on the measuring even if it varies a little in
terms of being horizontal.
Measuring (Horizontal angle)
The horizontal circle has a clockwise graduation from 0° to 359° (0 to 399g)
numeric indications every 10 degrees (10g).
1
Attach the plumb bob string to the plumb bob hook and adjust the string length.
2
Loosen the tripod screw a little, and move the instrument according to the apex
to match the plumb bob end with the measuring point.
3
Re-tighten the tripod screw.
4
Use the leveling screws to center the circular level.
5
Sight target A and turn the horizontal circle to bring the scale to “zero”.
Sight target B, and then the reading 30° (33g) will be a horizontal angle
between points A and B.
Leveling (for 4 points)
1
Set up the instrument almost in the center of the 4 points.
2
Match the bottom of a rod with pile A marked line (a).
3
Sight the rod and mark (e) on the rod that coincides with the horizontal line of
the reticle.
4
Place the rod at B and move it vertically to sight the marked line (e).
5
Mark (b) in ink on pile B according to the rod bottom.
6
Mark piles C and D in the above manner.
Horizontal line
Checking and adjusting
Operation of the automatic compensating mechanism
1
Adjust the three leveling screw to center the circular level.
2
Sight the target, then strike the tripod slightly by hand.
3
The reticle may swing, but it will soon return to its position. This provides that
the mechanism is functioning
Checking and adjustment of the circular level
1
Operate the three leveling screws to center the circular level.
Turn the instrument 180°
.
No adjustment is necessary if the bubble lines in the center circle. If not, take the following
measures for adjusting.
Checking
Center circle
Turn the
instrument180°.
No adjustment is
necessary if the bubble
lines in the center circle.
1
Use the hexagonal wrench to turn
the three circular level adjusting
screws to center the bubble by a half
that it is out-of-level.
2
Turn the three leveling screws to
bring the bubble to the center.
Check the instrument again by turn-
ing 180°, and adjustment is satisfac-
tory if the bubble remains at the
center. If not, repeat the adjusting
procedure
Leveling screw
Hexagona
l wrench
Adjusting screws
Adjusting
Collimation of the instrument
1
Place leveling rods A and B about 30
to 40 meters away from each other,
and set up the instrument with a tripod
almost in the middle between the
rods.
2
Use the leveling screws to center the
circular level.
3
Sight the rods for A and B reading.
(a1, b1)
4
Move the instrument to a position 2 to
3meters (7 to 8 feet) away from point
A.
5
Center the bubble again.
6
Sight the rods for reading again. (a2,
b2)
7
No adjustment should be necessary if the difference between to pairs of read-
ings is equal: b1-a1=b2-a2.
If not, make the following adjustment.
Checking
Rear View
Front View
1
Calculate b2'=a2+(b1-a1) and apply
to the rod farther away.Use adjusting
pin to turn the reticle adjusting screw
for collimating b'.
2
Follow “Checking” again, and confirm
that the adjustment is satisfactory.
Adjusting
Hexagonal wrench
Cover
TOPCON CORPORATION
75-1 Hasunuma-cho, Itabashi-ku, Tokyo 174-8580, Japan
Phone: 3-3558-2520 Fax: 3-3960-4214 www.topcon.co.jp
TOPCON POSITIONING SYSTEMS, INC.
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Phone: 925-245-8300 Fax: 925-245-8599 www.topcon.com
TOPCON CALIFORNIA
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Phone: 916-374-8575 Fax: 916-374-8329
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Phone: 010-458-5077 Fax: 010-284-4941 www.topconeurope.com
TOPCON DEUTSCHLAND G.m.b.H.
Giesserallee 31, 47877 Willich, GERMANY
Phone: 02154-885-100 Fax: 02154-885-111 [email protected]
www.topcon.de
TOPCON S.A.R.L.
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Phone: 33-1-41069490 Fax: 33-1-47390251 [email protected]
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Phone: 031-7109200 Fax: 031-7109249
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Phone: 44-1635-551120 Fax: 44-1635-551170
[email protected] [email protected]
TOPCON SOUTH ASIA PTE. LTD.
Blk 192 Pandan Loop, #07-01 Pantech Industrial Complex, Singapore 128381
Phone: 62780222 Fax: 62733540 www.topcon.com.sg
TOPCON INSTRUMENTS (THAILAND) CO., LTD.
77/162 Sinn Sathorn Tower, 37th Fl.,
Krungdhonburi Rd., Klongtonsai, Klongsarn, Bangkok 10600 Thailand.
Phone: 02-440-1152~7 Fax: 02-440-1158
TOPCON INSTRUMENTS (MALAYSIA) SDN. BHD.
Excella Business Park Block C, Ground & 1st Floor, Jalan Ampang Putra,
Taman Ampang Hilir, 55100 Kuala Lumpur, MALAYSIA
Phone: 03-42701068 Fax: 03-42704508
TOPCON KOREA CORPORATION
2F Yooseoung Bldg., 1595-3, Seocho-Dong, Seocho-gu, Seoul, 137-876, Korea.
Phone: 82-2-2055-0321 Fax: 82-2-2055-0319 www.topcon.co.kr
TOPCON OPTICAL (H.K.) LIMITED
2-4/F Meeco Industrial Bldg., No. 53-55 Au Pui Wan Street, Fo Tan Road,
Shatin, N.T., Hong Kong
Phone: 2690-1328 Fax: 2690-2221 www.topcon.com.hk
TOPCON CORPORATION BEIJING OFFICE
Building A No.9, Kangding Street
Beijing Economic Technological Development Area, Beijing, China 100176
Phone: 10-6780-2799 Fax: 10-6780-2790
TOPCON CORPORATION BEIRUT OFFICE
P. O. BOX 70-1002 Antelias, BEIRUT-LEBANON.
Phone: 961-4-523525/961-4-523526 Fax: 961-4-521119
TOPCON CORPORATION DUBAI OFFICE
C/O Atlas Medical FZCO., P. O. Box 54304, C-25, Dubai Airport Free Zone,UAE
Phone: 971-4-2995900 Fax: 971-4-2995901
IRELAND OFFICE
Unit 69 Western Parkway Business Center
Phone: 01460-0021 Fax: 01460-0129
Lower Ballymount Road, Dublin 12, Lreland
3C
31745 90011
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