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[MBLB4480], Letter from Charles Batchelor to Francis Robbins Upton, March 16th, 1883

Title: [MBLB4480], Letter from Charles Batchelor to Francis Robbins Upton, March 16th, 1883
Editor's Notes: #456. Yours of 2/22 enclosing 3 duration curves rcd. But I don't understand the curves---seem to give conflicting information. Also, they're for 8, 6, 17 cp lamps; I use 8, 6, 13.5cp--when did you change back, and why? Are they for central station or other use?
Author: Batchelor, Charles
Recipient: Upton, Francis Robbins
Date: 1883-03-16
Type: Letter
Subject: Testing and quality control; Incandescent lamp; Central stations
Folder ID: MBLB4-F
Microfilm ID: 93:808
Document ID: MBLB4480
URL: https://edisondigital.rutgers.edu/document/MBLB4480
Rights: Thomas Edison National Historical Park
Publisher: Thomas A. Edison Papers, School of Arts and Sciences, Rutgers University
Has Version: Archive.org Viewer, Microfilm Series Reel 93
License: CC0 1.0 Universal

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