Seiko Flightmaster Quartz Chronograph with Stop-Watch, slide-rule, and 12-hour totalizer #SND255
Seiko CALCULATOR SLIDE RULE Vintage automatic chronograph... for $2,879 for sale from a Trusted Seller on Chrono24
SRP611K] I get more comments on this watch than any other - my trusty Seiko 5 Pilot watch with a slide rule, powered by 4R36 auto with hack/wind. 45mmx13mm. Matched with a
Seiko] My new SRP613 with Slide Rule Bezel! : r/Watches
Watch with a cunning rotary slide rule
Seiko Prospex Automatic Watch with a Rotating Slide Rule Bezel #SRPB57J1
Caliper D1B Slide Rule Watch - Where Old Tech Meets Modern Tech - Microbrand Watch World