Robust and ideal for simple applications Calculation function: Addition - Subtraction Surfaces calculation function Making continuous measurements (tracking): enables minimum and maximum distance measuring SPECIFICATIONS: - Light Source : Laser diode - Wave Length : 635nm - Output : Less than 1mW - Measuring Range : 0.05-30m - Accuracy : ±2mm - Batteries : AAA x 2 - Overall Dimensions : 116mm - Net Weight : 100g