Engineers Dumpy Level

Description

• Compass survey is a method of surveying by taking bearings and linear distances to produce plan. • Bearing is measured using prismatic compass, while the linear distance is measured using measuring tape. • Bearing in compass surveying means angle is made by chain line or survey line by referring it to magnetic meridian or magnetic north.

Description

• With steel pole Size 1.5mm dia with tilting type • With steel pole Size 1.5mm dia without tilting type • With steel pole Size 2.0mm dia with tilting type • With steel pole Size 2.mm dia without tilting type

Description

Size 178 mm /7 Internal focusing, anti reflection coated optics with tilting arrangement and Fitted with revolving horizontal circle graduated to read 6 minutes with vernier and a provision to preset zero degree quickly. The tilting drum is graduated to read 1 : 5000 is incorporated for fine adjustment and accuracy. Supplied with accessories and adjusting tools Packed in PVC Plastic box with Aluminium telescopic stand in carrying canvas cover.

Specifications :

• The levelling staff of sturdy design that meets the requirements for intensive field work. • The staff material should be one of the following: teak, cypress, kail, aimi, champ, hollock or aluminium alloy. • If timber is used as staff material, then it has well seasoned, sawn in radial direction and free of defects. • The staff is telescopic, comprising three sections without any joint in length. • The top plate made of aluminium, anodised black. • Length 4 m

Accessories

• Circular bubble sensitivity of 25 minutes per 2 mm run. • Carrying case canvas. • Plummet fittings for test and adjustment of bubble.