Mu myaka ya za 1920, guhunika ibiti byatangiye kugaragara mu maduka y'Abanyamerika - Inkweto-zikwiranye na flueroscope. Ihame ryakazi ryari ryoroshye: Shyiramo ukuguru mu gice cyo hasi, abashobora kugura byagaragaye binyuze mu muyoboro udasanzwe uburyo bicaye cyane inkweto ku kirenge. Igikoresho cyasakuje hejuru, kugirango ubashe kubona amagufwa nurutonde rwuwo wenyine.
Nuburyo bisobanura VLADIR Nabokov muri "Dara":
Ati: "Ukuguru kwandikwa mu buryo bw'igitangaza, ariko nukwinjira, guhuma rwose: kugenda kw'intoki biri imbere ntabwo byagaragaye mu buso bwo hanze y'uruhu rwiza. Umushahara ufite umuvuduko udasanzwe wakubise impera zubutaka - kandi nkoraho inkweto z'intoki n'intoki ebyiri.
"Gusa!" Yavuze. "Yakomeje buri gihe ..." Yakomeje yihutira, akaba ashaka, niba ubishaka, ushobora kwikuramo wenyine munsi y'urugongo. Ariko birakwiye, reba wenyine ! " Amujyana kuri X-ray, yerekanye aho yashyira ukuguru. Areba mu idirishya hasi, abona ibye, umwijima, mwiza cyane uhindura ingingo ku mucyo.
Igikoresho cyatangiye gukurikiza ububiko bwinkweto bwa Amerika ya ruguru no mu Burayi. Mu Bwongereza, yitwaga Pdoscope, mu Budage - Shucoskop. Pdoscope ye (ni flueroscope) ibikoresho byo kubaga bya Howauke Igiciro cya "Shoe Locker" hamwe na X-ray itandukanye kuva $ 800 kugeza $ 1000.
Nubwo igiciro kinini, buri mubiko yashakaga kubona imiterere yimiterere. Impinga yo gukundwa zaje mu myaka yo kwiheba gukomeye: Abantu bashakaga guhitamo inkweto zifite ibitekerezo kugirango bishoboke nta shampiyona imwe. Ubucuruzi bwa nyiri pedoscope byari byiza, mu mpera z'imyaka ya za 1940, abahanga batavuze uburyo ibyo bikoresho byangiza.
Ntibatekereje iterabwoba kubaguzi: byibuze nta mvuni zari zabaye. Ahanini abagurisha barababara: Amaboko yabo yahise agwa ku ngaruka zifatika z'imirasire (impuzandengo ya 114 md / h), igihe baguye ibirenge by'abakiriya. Ibi byatumye Dermatitis nizindi ndwara zuruhu. Kimwe mu bikomere bikomeye cyane bifitanye isano n'umurimo wa pedroscope yanditswe mu buryo bw'inkweto, biturutse ku mirasire yagombaga kugabanuka ukuguru.
Abashingamategeko ku isi hose batangiye kugabanya ikoreshwa rya pedoscopes (bityo, abana bashoboraga kubakoresha inshuro 12 ku mwaka, kubera ko bahuye n'abagurisha), kubera ko bimaze kuba abagurisha), biturutse muri Amerika, barazimira burundu mu maduka ku ya 1960, no muri Ubwongereza na Kanada - mu 1970 -m.
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