Magnifying iav raws li qhov pom kev faib tawm tuaj yeem muab faib ua portable magnifying iav thiab desktop magnifying iav, desktop magnifying iav tuaj yeem kho tau, muaj lub hauv paus hauv qab no, saum toj no yog iav magnifying, cov duab ntawm lub iav magnifying tuaj yeem yog duab plaub lossis square. , los yog puag ncig, xws li lub iav magnifying yog tsuas yog siv rau lub sijhawm ntev saib ntawm qhov chaw.
Desktop magnifiers tuaj yeem muaj caj npab ntev thiab khoov qhov chaw, thiab tuaj yeem hloov pauv raws li qhov xav tau.
Portable magnifying iav yog zoo li saum toj no, ib puag ncig lub iav tsom iav nyob rau hauv pem hauv ntej ntawm ib tug kov, muaj ntau ntau hom portable magnifying iav, ib co iav magnifying yog square, kuj muaj magnifying iav uas yuav tsum tau ua ke, xws li magnifying iav yog feem ntau yooj yim rau khi thiab nqa, yooj yim rau kev soj ntsuam. Portable magnifiers kuj muaj nrog thiab tsis muaj teeb pom kev zoo, thiab magnifiers nrog lub teeb pom kev zoo muaj ntau yam txiaj ntsig thaum saib, thiab lub teeb tseem ruaj khov.
Kev faib tawm los ntawm pawg neeg siv:
Nws tuaj yeem muab faib ua cov iav tsom iav rau cov neeg laus cov iav tsom iav rau cov menyuam yaus sab nraum zoov portable magnifying iav kev txheeb xyuas qhov ntsuas qhov ntsuas iav;
Cov iav kuj tseem suav tau tias yog hom iav tsom iav. Nws yog rumored tias qhov no masterpiece yog invented los ntawm ib tug neeg nyob rau thaum xaus ntawm lub xyoo pua 13th.
Tej zaum ib tug tsis paub craftsman nyob rau hauv Tuam Tshoj
Nws tuaj yeem yog Alessandro di Spina ntawm Doscani, Ltalis.
Los yog tej zaum nws yog tus kws tshawb fawb Askiv Roger Bacon.
Xyoo 1260, Marco Polo tau piav qhia tias cov neeg Suav laus hnav tsom iav li cas kom loj fonts thaum lawv nyeem cov lus.
Loj oval-zoo li tus, siv lead ua pob zeb, quartz, topaz, amethyst yog av rau hauv lo ntsiab muag, thiab muab tso rau hauv lub plhaub vaub kib ua ib lub thav duab, lub tsom iav yog ib qho ua los ntawm tooj liab snapped rau lub sideburns, qhov thib ob yog khi rau pob ntseg, thiab thib peb yog tsau rau lub kaus mom.
Lub sijhawm ntawd, cov tsom iav tsom iav tau kim heev thiab cov cim xwm txheej, thiab ib tug squire ib zaug pauv tus nees rau ob lub tsom iav.
Yog tias nws tsuas yog iav tsom iav, tuav nws hauv koj txhais tes thaum nyeem ntawv.
Lub ntsej muag pob tshab ua hauv Venice thiab Nuremberg ib zaug nto moo nyob hauv Europe.