FOUR DIFFERENT VOLTMETER INSTRUCTION BOOKS. ALL SHOW MINOR SURFACE RUST TO STAPLES. ALL HAVE AGE RELATED PAPER TONING, EXTERIOR SOILING, A CORNER BUMP TO MODEL 314 AND SOME PAPER WAVINESS SUGGESTING PROXIMITY TO MOISTURE THOUGH THERE IS NO EVIDENCE OF DIRECT WATER CONTACT OTHER THAN LIGHT WAVINESS AND SURFACE STAPLE RUST.
I have additional duplicate copies that will be included as different copies occasionally have different information stapled to the rear covers, some showing issues and others showing replacement parts lists
1- MODEL 300- Smaller in size with a sticker on the cover from 1957. 11 pages plus outer wraps with parts list and schematic stapled to rear cover.
2- MODEL 300G- No date. 11 Pages plus pull out Schematic
3- MODEL 310A- Also has the 25 year anniversary 1957 sticker on front cover. Includes a fold out blueprint copy, with 8 pages plus a loose schematic and a second schematic with parts list stapled to the rear. There are three copies of this book. The others have more exterior soiling. One is dated 1962 and differs slightly.
4- MODEL 314- The copy I photographed has cover soiling and a 1967 date stamped on cover., though it is dated 1963. 11 pages plus a pull out schematic. There is a second copy that is cleaner and undated. This one is 8 pages with a schematic and parts list stapled to the rear cover. The extra three pages in the first copy reflects the incorporation of the schematic and parts list into the book so the second copy is likely older.
PLEASE USE ZOOM FUNCTION TO INSPECT ALL PHOTOS
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