INDUCTION COILS. A practical handbook on the construction and use of shock and spark coils. With 35 illustrations.
X-RAYS SIMPLY EXPLAINED. The theory and practical application of Radiography. 10 illustrations and 6 plates.
STATIC ELECTRICITY. Simple experiments in. A series of instructive and entertaining electrical experiments with simple and inexpensive apparatus. With 51 illustrations.
SIMPLE SCIENTIFIC EXPERIMENTS. How to perform entertaining and instructive experiments with simple home-made apparatus. With 59 Illustrations.
SMALL ELECTRICAL MEASURING INSTRUMENTS, describing the making and using of the different instruments fully illustrated.
SMALL DYNAMOS AND MOTORS. How to make and use them. A practical handbook, by F. E. Powell. Contents of Chapters: 1. General Considerations. 2. Field Magnets. 3. Armatures. 4. Commutators and Other Details. 5. Tables of Windings. 6. How to Build a Small Machine. 7. Useful Data. 8. Testing and Repairing. 76 pages, fully illustrated with detail drawings.
UNIVERSAL TIME CARD MODEL. By setting to the desired hour at any one place the movable model will show at a glance the actual time of all the other places in the world. Printed in two colors.
CROSS SECTION BOOKS 25c. each.
THE HANDY SKETCHING BOOK. Size 5×8, scale 8 to 1 in.
THE HANDY SKETCHING PAD. Size 8×10, scale 8 to 1 in.
ELECTRICIANS’ SKETCHING BOOK. Size 5×8, scale 10 to 1 in.
ELECTRICIANS’ SKETCHING PAD. Size 8×10, scale 10 to 1 in.
PLOTTING PAD. Size 9×11, scale 16 to 1 in.