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2 in 1 Electronic Distance Measurer

2 in 1 Electronic Distance Measurer with and without target device for internal and external applications up to 75m.This combination device enables simple and easy measurements of distances without contact with or without target device, as well as the calculation of surfaces and spaces. Now you can quickly determine without the use of elaborate tools the size of your plot, garden, flowerbeds, fields, paths etc.Single mode/without target device: especially suited for indoors where there are hard, even reflection surfaces. Like an echo sounder, this device transmits ultrasound waves inaudible to humans. These are then reflected against, for example, the target wall and returned. The device calculates the distance based on the time it takes for the ultrasound signal to return.Dual mode/with target device: suitable for indoors and outdoors. Frequently, a reflection is not possible, as the targeted object has no hard, even surface or there is no target object available. It is only by using the additional target device that accurate measurement is at all possible. Obstacles are also possible here, but the target device must remain visible. The distance measurer transmits an infrared beam to the target device. This beam, invisible to the human eye, triggers an ultrasound signal in the target device. The distance measurer receives this signal and evaluates the time between transmission and reception.Technical specifications:Single mode distance measurement 0.6-18 m/ measurement tolerance: 0.5 % 1cmDual mode distance measurement 1-75 m/ measurement tolerance 1 - 67.5 m 0.5% 1cm/ measurement tolerance over 67.5 m to 75 m: 1 % 1cmOperating range: 0-38°C5 memory places, 2 interim calculation memory placesVery easy self-calibration by userTemperature monitoring in °C/°FMetres, inches, feet, yards switchover, low-battery displayAutomatic switch-off after approx. 7 minutesIncludes carrying bag with shoulder strap, two 9 V block batteries and instructions.