Old School - Day 38 #CY365

Old School - This is my Sterling model No. 594 Decimal Trig Multi-Log slide rule ©1965. I acquired this slide rule in 1972 from the Tidewater Community College bookstore at the old Camp Pendleton Virginia Beach Campus. I still have the original 10 inch long belt holster - a symbol of geek cool. This pretty much makes it "old school" and believe it or not I still know how to use it. The slide rule would be obsolete within 5 years, replaced by cheap electronic calculators. Today these elegant mechanical analog computers are relegated to collector's items. Canon 7D, 1/200 sec @ f/18, ISO 800, 100mm macro lens.