Welcome to Allen Instruments online store Welcome to our online store Sokkia 8152-30 Engineer's Field Books - 6 pack SKU 8152-30 $44.94 In stock Quantity: 1 Add to Bag Product Details Durable, weatherproof field books. Left page has blue horizontal and red vertical lines. The right page has 10 x 10 blue lines and a red vertical center line; inch lines heavy. Helpful tables and formulae for solving right angles, curves. Book measures 4-1/2” x 7-1/4” Books sold in bundles of 6 Save this product for later Favorite