Concrete Slide Calculator Stock American Model (1.8"x7.75"). Double-sided: First side: Imperial measurements with results in Cubic Yards, Second side: Imperial measurements but results in Cubic Meters. Sleeve is screen-printed sub-surface in high resolution 4 colour process plus white on .010 clear Vinyl Plastic then heat bent. Insert is printed both sides in black and red on white compressed laminated plastic. Many options available - English or Spanish versions. Custom designs on quotation.