Vertical rods on Abacus are used to represent the place value of number. If the centre rod of Abacus is place of One's or Unit, the immediate next rod to the left is theplace of Ten's and the immediate nest rod to the left of Ten's is Hundred's and so on and so forth for thousand, 100 Thousand, Million's etc.
A: For standard box springs, twin sizes are usually 38 or 39 inches wide by 75 inches long, and full sizes are 53 or 54 inches wide by 75 inches long. Queen- and king-size box springs are both 80 inches long, but measure 60 inches and 76 inches wide, respectively.
We've seen full size box springs measuring as little as 52 inches wide and 74 inches long. Queen foundations or box springs are usually around 59 inches wide by 78 inches long, not the longtime standard of 60 inches wide X 80 inches long. Strangely, they've responded to the width problem, but not the length problem.