Photo Projection Slides Dyna Drill Smith Well Surveying Motors Diagrams Charts

This listing is for this pictured box of these photo slides.

I have some more pictures of the specific slides if you would like me to send them to you.

At first I counted 661, but thought I might have counted 20 too many. The second time I counted 637. This should be more accurate.

It looks like this is the best summary of what this is: Dyna-Drill Divison of Smith International Inc, and it seems like it was part of a seminar at UT, from the 70's maybe.

There are a few papers that were rubber banded to a few bundles that said some of the following things. A few of these are right off of the slides as well:

A Seminar on Well Surveying (Downhole)
Bit Walk & Deviation Control
Projection Equations
Advanced Ouija Board
Radius of Curvature Well Planning
Survey Calculations Methods
NMOC Lengths & Instrument Spacing
Deflection Tools

The slides are different brands, with these being either engraved or written on some of them:

Pakon
Kodak Kodachrome
Bob Yeargin Photography
Fugifilm
Plastimounts
Smith International Incorporated 1977
The Realists
Ektachrome Transparency
1977 by the University of Texas at Austin
Gepe made in Sweden
Genigraphics

Many look as if they could be reopened, and maybe another negative could be put in there instead. But opening one might break it, so I haven't tried.

It looks like there are doubles of some. There was one I thought I saw repeated about 10 times, and other one that had quite a few as well.

These might do well in an education setting since there are a lot of charts and diagrams of it seems like mostly industrial things.