For;

Superheat, Subcooling & Temperature Pressure Chart

Very Nice and Waterproof

Comes is a sealed tight clear bag.

Tecumseh 

Shows approximate Pressure Control Settings

How to check superheat

Tecumseh Model Chart and how to read Tecumseh Model Numbers

Temperature Pressure Chart at Sea Level for;

R-22, R-134a, R290, R404A, R407A, R407C, R410A, R414B-R414b, R438A- MO99, R507

When unfolded and open the size is approx. 10-1/4" X  4-1/2"

When folded up the size is; 4-1/2" x 2-1/2"

Very Nice Item to have, I carry one in my tool box and my note book in my shirt pocket!