Distance Meter Laser Ultrasonic à¤Ã×èͧÇÑ´ÃÐÂÐ à¤Ã×èͧÁ×ÍÇÑ´ÃÐÂÐ àÅà«ÍÃìÇÑ´ÃÐÂÐ sensor ÇÑ´ÃÐÂÐ àÅà«ÍÃìÇÑ´ÃÐÂÐ ÇÑ´ÃÐÂÐàÅà«ÍÃì ÇÑ´ÃÐÂзҧ ¡ÅéͧÇÑ´ÃÐÂÐ ÅéÍÇÑ´ÃÐÂÐ à·»ÇÑ´ÃÐÂÐ > > Distance Meter à¤Ã×èͧÇÑ´ÃÐÂÐ Ultrasonic Distance Meter à¤Ã×èèͧÇÑ´ÃÐÂÐ à¤Ã×èͧÇÑ´¾×é¹·Õè »ÃÔÁҵà DT100 EXTECH , USA Ultrasonic Distance Meter Laser pointer identifies target area and improves aim Measures from 1'8" to 50' (0.5 to 15m) Takes the sum of consecutive length measurements Automatically calculates Area and Volume Store/Recall up to 3 readings Built-in white LED flashlight Visual and audible error alarms Low battery indicator Auto power off Complete with 9V battery Measurement Range 1'8" to 50' (0.5 to 15m) Accuracy ±(0.3% reading + 3 digits) Resolution 0.1" (0.01m) Length Add calculation 99'11" (99.99m) Area calculation 999.99 sq. ft. (999.99m2) Volume calculation 999.99 cu. ft. (999.99m3) Power Supply 9V Battery Dimensions 5.4 x 2.4 x 1.7" (136 x 61.5 x 44mm) Weight 4.1oz (117g) Distance Meter Laser Ultrasonic à¤Ã×èͧÇÑ´ÃÐÂÐ à¤Ã×èͧÁ×ÍÇÑ´ÃÐÂÐ àÅà«ÍÃìÇÑ´ÃÐÂÐ sensor ÇÑ´ÃÐÂÐ àÅà«ÍÃìÇÑ´ÃÐÂÐ ÇÑ´ÃÐÂÐàÅà«ÍÃì ÇÑ´ÃÐÂзҧ ¡ÅéͧÇÑ´ÃÐÂÐ ÅéÍÇÑ´ÃÐÂÐ à·»ÇÑ´ÃÐÂÐ > > Distance Meter à¤Ã×èèͧÇÑ´ÃÐÂÐ Distance Meter Ultrasonic Distance Meter à¤Ã×èèͧÇÑ´ÃÐÂÐ à¤Ã×èͧÇÑ´¾×é¹·Õè »ÃÔÁҵà DT100 EXTECH , USA