Books published by Hobar Publications

This manual covers circuits, measuring electric power and costs, switching, grounding for safety, wire and current protection, transmission and distribution of electricity, and the service entrance. Considerable emphasis on safety including the use of the GFCI. Each unit includes practical wiring exercises explaining the topics covered along with the proper use of electrical tools.

This manual brings the student information concerning concrete construction. Developements in cement types are presented. Graphics and tables are included, and information related to cold and hot weather concreting is presented, including numerous tables and figures. Materials from Portland Cement were used to develop this manual. Each chapter contains classroom exercises to assist students in learning the subject matter. A number of chapters contain laboratory exercises that assist the student in learning practical aspects of concrete construction. This manual also includes numerous demonstrations and ideas.

The Forest Management Digest covers all aspects of forest management plus wildlife by species, provides sample contracts and forms, and includes a comprehensive glossary and additional resource listing. Outdoor enthusiasts of all levels will find the information useful and easy to understand.

This manual contains the latest in small engine technology including CDI solid-state ignition, automatic chokes, no choke carburetors, and fuel pump carburetor systems. Classroom and laboratory exercises are included. Special emphasis related to small engine overhaul and repair has been designed into all laboratory exercises to make your small engine instructional unit more complete. Procedures for ordering small engine parts for repair are covered throughout the manual. The appendix contains safety exam, parts order form, English/Metric equivalent charts, engine-matics and hydra-matics formulas, and engine overhaul worksheets.

This one of a kind manual with over 125 tables and illustrations covers the important topics related to planning, organizing, teaching mechanics courses. Each unit includes classroom exercises and summarizing points to further emphasize the topic covered. The appendix includes many forms and teaching aids to enhance your instructional program.

This manual has been prepared for teachers and students in Vocational Agriculture and Industrial Education, at the secondary and post secondary levels. An educator can utilize this text for study of the fundamentals of electricity, generation of electricity, motor principles, overload protection devices, switches and sensing divices for controlling motors, wiring of circuits, testing of motors and essential service and maintenance. There are also classroom and laboratory exercises which reinforce the technical subject matter in each unit.

This is an educational tool to be used in a classroom setting or by commercial firms and other agencies for inservice training programs. This manual contains illustrations of the different measuring instruments, an explanation of their construction, and how to use the instruments for specific applications. The tools explained are micrometers, vernier calipers, thickness gages, and wire gages. Classroom exercises and laboratory worksheets are included for instructional and evaluation purposes.

This manual includes framing square terminology, brace layout, and complete procedures for common rafter (with and without a tail), hip and valley rafter, and jack rafter layout. Roof types, board foot measure, stair layout, and other framing square applications are presented. Exercises are provided throughout the manual plus an appendix containing popular rafter tables.