Tamaya >Digital Ballon Theodolite




TAMAYA – Digital Ballon Theodolite




Please refer to the brochure for additional information.





Main telescope
Diameter 47mm TD-4
Magnification 18X
Image Inverted
Field of view 2°30'
Resolution 3.5"
Sub telescope
Diameter 16mm
Magnification 4X
Field of view 11°
Resolution 12"
Digital Angle Display
Azimuth 0-360°
Elevation 0-360°
Smallest unit 0.01° (for both azimuth
and elevation)
LCD(16 digits, 2 lines)
Clock function
Built-in real-time clock
Calendar function
Timer 1-99 seconds
Command and alarm Buzzing
Input of measurement error Push button
Azimuth set function Key input (dialogue)
External input/output function RS-232C
Operating time Approx. 20 hours continuous
Level vial
Sensitivity 90"/2mm
Dimensions / weight
Body 192(W)x240(D)x270(H)mm 5.2kg
Case 465(W)x220(D)x305(H)mm 4kg
Tripod(metal) 1700mm(when fully expanded)
1030mm(when fully contracted)
Main power Lithium ion battery(rechargeable)
Backup memory Lithium battery
Hood 1 piece
Eyepiece filters 1 piece(switch between colors by rotating)
Tubular compass 1 piece
Level vial adjusting pin 1 piece
Earphone for buzzer 1 piece
Tripod 1 piece
Battery charger(100-240V) 1 piece
Carrying case 1 piece
Instruction manual 1 piece
Optional items
Printer Thermal head, 16 digits
comes with a connection cable
Software for TD-4  
RS-232C cable For PC
Chart paper 10 rolls per set


With the optional printer, data can be printed out at real time.


TD-4's Data-processing Software

Using TD-4's data-processing software, the user can make graphs showing relationships between "altitude and wind direction" and "altitude and wind speed" as well as graphs showing the path of pilot balloon.
The user can make such graphs based on azimuth and elevation data, taken at certain intervals, which are stored as Excel format.