ASTM F2999 ma jik ikum lembe eca utiye matek man ma lac. Lembe maeni kende re ma mio nen pa lembe ma jugoro. Yore maber loyo mi neno nia piny peri urombo ku cik pa ASTM F2999 utiye ni pango ngati ma ngeyo tic mi pimo piny peri. RTS copo timo pima pa jam piny mabecu nimakere ku ASTM F2999 man lembe mukende mapol ma jutiyo kudu i ngom mi Amerika, European Union, man Canada.
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Lembe mi tic
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ASTM Jewelry Testing: Summary of Mechanical Specifications
Jam aruka ku betri
Ka battery ma ni i jewelry juloko ni "piny ma nok" (ku dimension moko ci ma piny pa 1.25 inches) nyo etiye ku peko mi mwonyo yot yot, umitu juketh battery ne ubed ma juwodhu ngo manangu jutiyo ku jam tic ma dhanu mapol tiyo kudu (macalu screwdriver).Jam aruka ma tye ku magnet
Jam aruka ceke ma tye ku magnet ma rac umaku juketh iwi gi ku nying maber. Lembe ma jugoro uketho i iye lanyuth pa lembe ma jugoro. Mi medo, calu magnets copo loko tic pa pacemakers man jam yath mukende ma juketho i kum dhanu, ju ma yiku gi umaku gipar pi medu nying gi.
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Piny mi tic