TWO INSTRUCTION CATALOGS, ONE WITH A 4-PAGE CATALOG AT THE REAR. STAMPS AND WRITING TO THE EXTERIOR FOLDERS AND TITLE PAGE OF THE 510B & 510B-P BOOKLET, AS WELL AS THE BACK OF REAR PAGE OF 510B. AGE RELATED PAPER TONING AND HANDLING CREASES.

1-Operating instructions of models 510b & 510b-p wide-range audio oscillators: 7 Single Sided pages. Attached at rear, within folder, is a four sided "Electronic Measuring Equipment" catalog for Waveforms, Inc., showing the 500 and 400 series as well as the 1501, a combination of the 510B and 520A

2- Operating Instructions for the Model 520-A Extended-Range Voltmeter, though title page refers to it as a "Technical Manual".  Six single sided pages plus fold out spec sheet

PLEASE USE ZOOM FUNCTION TO INSPECT ALL PHOTOS. 

 

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