Magnifier Classification

Cov tsom iav tsom iav tuaj yeem muab faib ua cov tsom iav tsom iav thiab cov iav tsom iav tsom iav raws li lawv qhov tsos. Desktop magnifying iav tuaj yeem kho tau, nrog lub hauv paus hauv qab thiab lub iav tsom iav saum toj no. Cov duab ntawm lub iav magnifying tuaj yeem yog duab plaub, square, lossis ncig. Cov tsom iav tsom iav no feem ntau yog siv rau lub sijhawm ntev saib ntawm qhov chaw.
Desktop magnifying tsom iav muaj caj npab ntev thiab nkhaus qhov chaw, tso cai rau kev kho kom yooj yim ntawm txoj hauj lwm raws li xav tau.
Portable magnifying iav zoo li ib qho saum toj no, nrog lub voj voog loj loj nyob rau pem hauv ntej thiab kov rau tom qab. Kuj tseem muaj ntau hom iav magnifying iav, qee qhov yog square lossis tuaj yeem ua ke. Cov iav magnifying no tsuas yog yooj yim nqa thiab saib. Kuj tseem muaj cov iav tsom iav uas siv tau nrog thiab tsis muaj teeb pom kev zoo. Magnifying iav nrog lub teeb pom kev zoo muaj ntau yam zoo thaum saib, vim tias lub teeb nyob ruaj khov.
Classified los ntawm pawg neeg siv:
Nws tuaj yeem muab faib ua cov neeg laus nyeem cov tsom iav tsom iav, cov menyuam yaus lub tsom iav tsom iav, cov iav tsom iav sab nraum zoov, thiab kev ntsuam xyuas kev tshaj lij thiab ntsuas tsom iav tsom iav;
Cov iav kuj tseem suav tau tias yog hom iav tsom iav. Muaj lus xaiv hais tias qhov no masterpiece yog invented los ntawm ib co neeg nyob rau hauv lub lig 13th caug xyoo.
Tej zaum ib tug tsis paub craftsman los ntawm Tuam Tshoj
Nws tuaj yeem yog Alessandro di Spina los ntawm Doscany, Ltalis.
Los yog tej zaum nws yog British kws tshawb fawb Roger Bacon.
Xyoo 1260, Marco Polo tau piav qhia yuav ua li cas cov neeg laus Suav hnav tsom iav kom nthuav lawv cov ntawv thaum nyeem ntawv.
Cov duab oval loj yog tsim los ntawm kev sib tsoo cov pob zeb siv lead ua, quartz, topaz, thiab amethyst rau hauv lo ntsiab muag, thiab muab tso rau hauv lub plhaub vaub kib ua ib lub thav duab. Cov tsom iav ob txhais ceg yog fastened rau lub tuam tsev nrog tooj liab, khi rau pob ntseg nrog ib tug nyias txoj hlua, thiab tsau rau lub kaus mom.
Lub sijhawm ntawd, cov iav tsom iav tau kim heev thiab yog lub cim ntawm cov xwm txheej. Muaj ib zaug ib tug gentry pauv ib tug nees rau ib nkawm tsom iav.
Yog tias nws tsuas yog iav tsom iav xwb, tuav nws hauv koj txhais tes thaum nyeem ntawv.
Lub siab transparency lo ntsiab muag ua nyob rau hauv Venice thiab Nuremberg yog nto moo nyob rau hauv cov teb chaws Europe.