Topcon DT-300 Series User Manual

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4. PRODUCT OUTLINE
 DT-305L/307L/309LG
1 Handle
2 Handgrip locking screw
3 Sighting collimator
4 Instrument height mark 
5 Battery cover
6 Circular level
7 Leveling foot screw
8 Display unit*
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9 Optical plummet
10 Objective lens (Includes "Laser-pointer function")
11 Telescope focusing ring
12 Cross-hair adjustment section cover
13 Vertical clamp
14 Vertical fine motion screw
15 Operation keys
16 Horizontal fine motion screw
17 Horizontal clamp
18 Tribrach*
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19 Tribrach clamp (DT-305L/307L only)
20 Plate level
21 Laser axis adjusting screw (with cap)
22 Telescope eyepiece (Diopter ring)
*1 DT-309LG has one side display only.
*2 Tribrach type
DT-305L/307L: Detachable
DT-309LG: Fixing
 Instrument height mark
The height of the instrument is as follows:
• 177mm (from tribrach mounting surface to this mark)
• 222mm +5/-3mm
Tribrach type: Detachable (from tribrach TR-103R plate to this mark)
Tribrach type: Centering (from tribrach plate to this mark)
 Laser-pointer function
A target can be sighted with a red laser beam in dark locations without the use of the telescope.
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Topcon DT-300 Series Specifications

General

Brand	Topcon
Model	DT-300 Series
Category	Laser Level
Language	English