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.
Length and width dimensions for mattresses and box springs have a tolerance range of Â± 1â for standard sizes (Twin, Full, Queen & King) and Â± 1 Â½â for custom sizes (Twin XL, Full XL, California King, etc.). Twin Twin size mattresses are the smallest standard size available and are approximately 38 x 75. Twin XL Twin XL mattresses are approximately 38 x 80. Full Full size mattresses are approximately 53â x 75â. Queen Queen size mattresses are the most popular standard size available and are approximately 60 x 80. King King size mattresses are the largest standard size available and are approximately 76 x 80. California King California King size mattresses are longer and narrower than regular Kings and are approximately 72 x 84.