Pentax Espio 738 lens mount_Contax/Yashica This extension tube set includes

This extension tube set includes two M42 thread-mount extension tubes: roughly 7mm and 15mm

There is a minor amount of dust

and that gooey base is Triethanolamine

The Weston Master 2 Cine Exposure Meter is a selenium light meter made for motion pictures (its not practical for still photo use)

so you're on your own to figure out the settings

Pentax Espio 738 lens mount_Contax/Yashica This extension tube set includesThe Pentax Espio 738 is a compact 35mm point and shoot camera with a reasonable 38 70mm zoom range, easy to use controls, and some helpful options (including Bulb mode for long exposures.) Pentax always did a good job with P&S cameras, and this one's no exception. Battery included.