Ruler

You might be able to tell that I've spend a goodly portion of the last year, locked away in-front of my computer working on drawings and details of on site projects. However this is apparently a fruitless exercise as one frequently get phone calls from builders / subcontractors requesting a dimension.  I Ask you, "did I issue you a drawing? Is that drawing clearly marked with a scale ? ITS CALLED A RULER IDIOT. US IT!"