Building the 200 inch Palomar Telescope - 1948 Dedication issue in PDF Format Airguide and the forged surfaces are

and the forged surfaces are painted red

This superb West German binonocular is a wonder of miniaturization giving an excellent 8x20 image in an incredibly compact and lightweight package

Light Management System

I bought these when I was in graduate school at UT Austin in 1975

Back Scale

Building the 200 inch Palomar Telescope - 1948 Dedication issue in PDF Format Airguide and the forged surfaces areBuilding the 200 inch Palomar Telescope 1948 Dedication issue in PDF Format. You are purchasing a downloadable DIGITAL FILE in PDF format that is suitable for printing or viewing on your desktop, laptop, phone, e reader, or any platform that allows you to view a PDF. This is a high quality digital photo scan of the 1948 Dedication Issue of the Caltech Engineering and Science magazine. This is the complete magazine, and it shows some age and wear