Welcome to Allen Instruments online store Welcome to our online store Sokkia 8152-50 Level Books - 6 pack SKU 8152-50 $44.94 In stock Quantity: 1 Add to Bag Product Details Both left and right page contain blue horizontal lines, red vertical lines, and 6 vertical columns. Book measures 4" x 6 1/2". 6 Books per bundle Save this product for later Favorite