▁was ▁innov ative ▁in ▁developing ▁instruments ▁for ▁this ▁market ▁while ▁maintain ing ▁the ▁pre - war ▁quality ▁and ▁finish . ▁The ▁Science ▁Master ▁Mic ros cope , ▁introduced ▁in ▁ 1 9 5 7 , ▁was ▁in ▁great ▁demand ▁for ▁use ▁in ▁schools . ▁The ▁established ▁Prior ▁Mon oc ular ▁Dis sect ing ▁Mic ros cope ▁was ▁widely ▁supplied ▁for ▁educational ▁use . ▁The ▁robust ness ▁and ▁simplicity ▁of ▁these ▁instruments ▁gave ▁many ▁years ▁of ▁trouble ▁free ▁use . ▁ ▁For ▁the ▁Imperial ▁Can cer ▁Research ▁Fund ▁in ▁London ▁ 1 9 6 2 , ▁Prior ▁supplied ▁a ▁Mod ular ▁In vert ed ▁Mic ros cope ▁hous ed ▁in ▁a ▁temperature ▁controlled ▁cab ine ▁for ▁cell ▁culture ▁exam ination . ▁The ▁provision ▁of ▁a ▁c ine ▁camera ▁enabled ▁continuous ▁or ▁time ▁lap se ▁c ine - ph ot ography ▁to ▁be ▁carried ▁out . ▁The ▁Cin em ic ros cope ▁was ▁also ▁adapt able ▁for ▁still ▁phot ography ▁or ▁closed ▁circuit ▁television . ▁This ▁mic ros cope ▁was ▁certainly ▁advanced ▁of ▁its ▁time ▁and ▁one ▁of ▁the ▁fore - run ners ▁of ▁the ▁modern ▁invert ed ▁mic ros cope - now ▁such ▁an ▁essential ▁tool ▁in ▁cell ▁bi ology ▁and ▁t issue ▁culture ▁work . ▁A ▁unique ▁Prior ▁T issue ▁Culture ▁Chamber ▁was ▁also ▁supplied ▁and ▁enabled ▁work ▁to ▁be ▁carried ▁out ▁when ▁using ▁an ▁invert ed ▁or ▁standard ▁ere ct ▁mic ros cope . ▁▁ 1 9 7 0 ▁- ▁Pres ent ▁Day ▁ ▁In ▁ 1 9 7 8 ▁W .