Type of Control Station

Abbreviation

No. of Stations

Linear Accuracy

Remarks

Primary Trig Station

-

74

-

Maintenance by JUPEM

Secondary Trig. Station

N

190

-

"

Tertiary Trig. Station

T

329

-

"

Tellurometer Traverse Station

TT

1769

1 in 50,000

Established & maintained by Lands & Surveys

Department

Standard Traverse Geodimeter

STG

8327

1 in 20,000

"

Satellite points to TT Stations

TT.../1,2, or 3

1594

-

"

Satellite points to STG Stations

STG.../1,2, or 3

171

-

"