1
- 1. jpU. gp.vt;.ujPe;jpuFkhu; 27 ,e;Jf; fy;Y}up
• cgfuzj;ij kl;lg;gLj;jpa gpd; cgfuzj;jpypUe;J thrpg;G vLf;fg;gLk;.
FWkl;l khdpapy; msTfis vLf;Fk; Kiw
• Dumpy level My; Rod I mtjhdpj;J eLFWf;F Nfhl;L msit vLf;f Ntz;Lk;. (Middle Cross)
Fj;Jauj;ij fzpj;jy;
Fj;Jauk; ,uz;L Kiwfspy; fzpf;fg;gLk;.
1. cgfuz cau Kiw - Height of Instrument Method
2. cau;T tPo;r;rp Kiw - Rise & Fall Method
njhiyfhl;b
ePu;Fkpop
Rotating
1k; jpUfhzp 2k; jpUfhzp
3k; jpUfhzp
A
B
O
>
>
100 m
>
>
40 m
>
>
Vertical
Distance
>
<
<
Horizondal Distance
Reference line
1.4 m 2.5 m
>
>
>
>
1.4 m
1.1 m
