Large graphical catalogs are a bit SLOW , please give them time to load. To answer your questions, YES , we completely clean and inspect all used rules, and do not offer any we feel are substandard . If there are any marks or detracting features, we clearly state them in the listing. Before shipment, we clean the rule faces and cursor, the slide guideways, align the body, and align the cursor. We also clean and polish the case, so that when you get your rule, it is as ready as possible for you to enjoy.
Personal checks have to clear before shipment.
An outstanding and useful device, incredibly handy if your work in the science area. Very nice rule, with operating instructions on the face, new in blister pack. PIC is the actual rule offered. A very sophisticated and beautiful flight computer for doing altitude, pressure, time, temperature, and fuel problems. Still in demand today among many pilots, but very hard to find.