SpectraCal (TM) - People will begin to truly understand your brand message when you give them a great item like this 12-inch ruler calculator! You can draw a straight, line, measure the lengths and widths you need, and use the 8-digit display to calculate different equations. Batteries are included. This is perfect for high school students, so make this available at an office supplies store for back-to-school time. Imprint this with your company name or logo and educate your clients about your business!