Field Engineer's Manual - Spiralby Robert O. Parmley (Author) Publisher's Note: Products purchased from Third Party sellers are not guaranteed by the publisher for quality, authenticity, or access to any online entitlements included with the product. THE ESSENTIAL POCKET REFERENCE FOR FIELD ENGINEERS expanded, completely revised and more useful than ever As an engineer working in the field, you can't bring along a library of technical materials for every problem that might arise.