होस्टेल ला टाइमर बसवने.
Costing:-
| ट्यूब | 40×40 | 30ft | 45 | 1350 |
| स्क्रू | 20X25 | 20 | 4 | 80 |
| खिळे 1 10नग 3 30 | 1 | 10नग | 3 | 30 |
| timer | 1390 | |||
| Total = | 2820 | |||
| electricity 15% | 423 | |||
| = 3243 |
density calculation of a battery
board fitting
fan repairing
motor rewinding
flexible pipe fitting
