Lloyd’s Accumatic Calculator. Model 320. Made in Japan.
Found this beast when tidying up under a desk. I particularly like the burnt orange to beige to sienna brown colour combo. Very swank.
This is the fifth calculator featured on Project Obso. I count the slide rule as well as the Dalton adding machine.
More obsolete calculators found at Vintage Calculators Old calculators museum and Datamath.
Not surprisingly dusty.
Status: Pretty sure this is a Mr.OP garage sale find. It still works, so that makes it harder to convince him it must go. The sea monster has enough power now.
Kill-ratio: 19:2 / ~10:1
(pix with captions don’t count towards ratio)
Alt-title: Untitled Found Object No. 320 for 204 calculations.
The usual thanks to John and Richard for kicking off these uncalculated alt titles. And to Ben for the format summary “joke” at the end of posts.
Obsolescence Project 
I believe that’s a model of calculator my parents had, although that one’s long since gone to an unspeakable fate. The $latex\pi$ looks quite familiar, though.
Unspeakable fate:) – hope it doesn’t become a mathematical zombie