| • g.t.s bench mark | |
| तल: bed scale degree Base surface plane underside | |
| तल चिह्न: bench mark benchmark तल bed scale degree Base | |
| चिह्न: remembrance slot blazon cachet track relict | |
महात्रिकोणमितीय सर्वे तल चिह्न in English
[ mahatrikonamitiya sarve tal cihna ] sound:
