20 Most Recent Black & Decker Distance Measurer with Sensor, Marksman Questions & Answers

http://www.dewaltservicenet.com/documents/English/Instruction%20Manual/624090-00,BDCAL100.pdf

I don't know how to use this my husband passed on and I wanted to use this for measuring rooms which side buttons do I use

While holding the stud finder on a spot on the wall where you assume there is no stud... press the button and hold and stay still for 10 or 15 seconds to calibrate. Then while still pressing the button start sliding sideways until the lights indicate the thickest point. You can use a pencil to mark the beginning and end. The center of that is the center of the stud. Measure 3/4 of an inch left and right of it to know it's sides.

http://servicenet.blackanddecker.com/Products/Detail?productNumber=BDSM100#

http://www.blackanddecker.com/Manuals.aspx

mine does that when battery is low or red light not bouncing back

If you take a tape measure and step from the wall at exactly 10 feet, you will be able to turn the calibration knob to the same exact distance. All other distances from that point on will be precise. Thank you, Dana

Rotate the laser to center horizontal (H) or vertical (G) bubble vials

I just bought one too and instructions need deciphering. Select wood or metal with selector switch. Put unit flat against wall. Press and hold on/off button on left. (It looks like it must be kept pressed in at all times to be 'on' and when released it's 'off). The unit with calibrate and give a beep back and lower red LED will stay on. Move unit slowly left/right and more red LEDs light up until green is on. This is 1st edge. Mark it with pencil. Move unit along until Green is off and down to single LED. Then move it back in opp. direction until Green is on again. This is 2nd edge. Attached is a scan of page from Instruction Manual. Quality is lowish as attachment limit here is 150kb.