The Bogside Publishing B-150 - Level Book is a 4-5/8" x 7-1/4" standard size book. It has a 6 vertical grid pattern printed on white ledger paper that has 50% cotton content and is specially formulated for maximum archival service, ease of erasure and protected by a water resistant surface sizing. It has 160 pages with 16 page curve table along with sewn in pages with water-resistant hard cover. Printed and bound in the USA with a very high quality control. If you're looking for yesterday's quality, then you've found it with Bogside Field Books.
The Bogside B-150 is the replacement equivalent for the Elan E64-64.