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https://faq.watchbuys.com/article/show/113520-what-does-17-jewels-mean
Jul 29, 2020 · What does "17 jewels" mean? Higher grade watches have traditionally used a jeweled movements, which means that jewels (originally natural ruby, now synthetic ruby) were actually used in the movement. These jewels are functional - they are used as the bearings for the wheel trains and in high wear parts such as the escape lever and impulse jewel.
https://vintagecitizenwatches.com/2015/05/14/citizen-alarm-4h/
May 14, 2015 · Here it is: the 1963 Citizen Alarm 4H (four hands) 17 jewels Parashock! As usual, the watch is made in a polished stainless steel case, but as a novelty, it has not one but two case backs. The reason for this is that the inner one that snaps into a precise place, has …Estimated Reading Time: 2 mins
https://www.prestigetime.com/blog/what-are-the-jewels-in-a-watch-for.html
Jul 25, 2021 · This means that it uses jewel (usually ruby) bearings in the mechanical movement from the balance wheel all the way to the center wheel pivot. What does 21 jewels mean in a watch? Similar to a 17-jewel watch that has a fully jeweled movement, but also has a few extra capstones added which are used to reduce positional errors.Estimated Reading Time: 6 mins
https://www.reddit.com/r/Watches/comments/tt4i1/what_does_parashock_mean/
Parashock is Citizen's proprietary shock protection system for their mechanical watches, back when they made them under the Citizen name, and it's still used in their Miyota movements, as well as by HMT, whose in-house movements were developed with Citizen's help. Most modern watches have some form of shock protection around the balance wheel ...
https://www.stonehengewatchcompany.com/listing/761737095/mens-serviced-1970s-hmt-pilot-parashock
This is a handsome, rare, vintage, blue military dial,1970's, HMT Pilot, Parashock 17 jewel wristwatch in pristine condition.It features a 1 3/8 polished all stainless steel case, excluding crown and lugs.The stunning repainted deep blue dial contrast beautifully against large raised red number
https://sweep-hand.org/vintage-citizen-case-backs/
Jun 15, 2013 · hi there i have been given a cutlass 17 jewels parashock from my father on the back it says csp cutlass 4-020294-k under that it has 010001592 in smaller writing and under that it has63-5618. the face says cutlass 17 jewels parashock. japan 6025943y. the watch is a wind up and is in working order ,i cant find any info about the watch,would you know anything about it.the watch doesnt say ...
https://17jewels.info/movements/h/hmt/
17jewels.info: HMT - Movements of the indian manufacturer HMT (Hindustan Machine Tools Limited) from Bangalore, India
https://vintagecitizenwatches.com/category/parashock/
Sep 25, 2016 · The calibre inside is the Citizen hi-beat parashock 7230, running at 36000 bph. It has 28 jewels and a beautiful white sweeping central second hand that hacks, it can be winded by hand also and has a quickset date feature. The day is set by advancing the hour hand pass midnight.
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