If you are looking for a very compact laser distance meter, the DeWalt DW030PL-XJ might be what you are looking for. With a size of 13.7 x 9.5 x 3 centimeters, you can easily insert it in your pocket so that you can take a measurement with one or another. The red laser beam has a range between 0.15 and 9 meters. You have a measurement deviation of 9 millimeters. The laser operates on a rechargeable 5 volt Li-Ion battery. When the battery is empty, you can recharge it quickly with the supplied USB cable. So you can easily use your DW030PL-XJ anywhere.