An Ordnance Survey cut mark in the UK. The term bench mark, or benchmark, originates from the chiseled horizontal marks that surveyors made in stone structures, into which an angle-iron could be placed to form a bench for a leveling rod, thus ensuring that a leveling rod could be accurately repositioned in the same place in the future.
9 Causes of Leaky Windows. One of the main reasons to ensure your windows are watertight is to keep moisture out of the walls. Once inside your walls, moisture can cause rot, mold and pest problems. Keeping water at bay would be easier, of course, if our homes had no openings for doors and windows.
Bad Window Switch / Bad Wiring. If your window problem is only on one side, the cause is most likely a bad switch, bad wiring, or a bad window motor. The most common problem of these is the power window switch. So, we will first troubleshoot the switch and in the process check the wiring up to the switch.f the power window relay is bad, neither window will move. So, if the problem is only one one side, the relay is good. If you suspect that the power window relay is bad, you can remove the relay and jumper terminals 30 and 87 to power the window motors.