Technical Specifications:

High speed measurement: Should have aim , focus , and press a key height and distance are simultaneously measured in 2.5 seconds , 20 percent faster than ordinar  digital levels. Wave and read technology: The instrument should be innovative Waveand- Read technology provides an additional survey style option. Digital level machine should be tracks the bar code staff waved back and forth to read the correct height. , Should be easy to use and user friendly. Instrument quality should be international standard. , Should be rugged use and Bangladesh environment condition. Internal memory: should be capable 2 , 000 measurement data of elevation or height difference should be recorded in the internal memory. Should have height difference , cut and fill setting out , height measurement application. Main technical parameter Height accuracy by electronic measurement: Min. 0.6mm or less , Height accuracy by visual with standard staff: 2mm or less , Distance accuracy electronic : < ±10mm (±0.4in.) [D< =10m(D33ft.)] , Measuring range electronic: Min. 100m or more , Measuring range visual: 1.5m better. , Measuring mode: Single / Repeat / Average / Tracking / Waveand- Read or more , Display resolution height: 0.0001/0.001/0.01m or better , Display resolution distance: 0.01/0.1m or better , Measuring time single and repeat: 2.5s or less , Measuring time average: 2.5s or less , Measuring time tracking: 1s or less , Telescope specification , Objective aperture: Min. 36mm or more , Magnification: Min. 28x or better , Resolving power: 3 or better , Minimum focus: 1.5m or better , Field of view: 1º20 or more , Compensator type: Pendulum compensator with magnetic damping system. , Compensator range: ±15 or more , Sensitivity of circular level: 10