The Bell System Practices (BSPs) contained information about Teletype Equipment that could not be found elsewhere.

RTTY.COM is pleased to present BSP Section 570-001-901, which is a compendium of Critical Adjustments for the most commonly found Teletype Equipment from Model 14 to Model 35.

The manual contains 146 pages.

For convenience we have broken it down into several sections and have
prepared it in Adobe .PDF format, for uniform presentation and printability on
all computer platforms. Those who do not have Adobe Acrobat Reader installed
on their computer may obtain it free by clicking on the link provided.

• FREE Adobe Acrobat Reader - - - - - Click Here
  
  Critical Adjustments :

• Model 14 Equipment

• Model 15 Typing Unit, Keyboard, and
  Keyboard perforator-Transmitter

• Model 28/35 Typing Unit - - - Part One - - - Part Two

• Model 28 Keyboard, Perforator Transmitter
  Typing and Non-Typing Perforator

• Model 28 Typing Reperforator

• Model 28 Transmitter Distributor

• Model 33