High frequency apparatus, design, construction and practical application; a practical treatise for electrical engineers, electricans, physicians, students and experimenters (1920)
Curtis, Thomas Stanley · New York, Norman W. Henley publishing company · leaf 157
x^-; Use^Shck,lfno J other Size isV: ^p^cified. -<----t------f--^ --• J^-- -1—v.;rH-i … A ^ ,, B C D . , Pieces marked RSecf/ons belowServefo ClampApparahisinPlace,nofindicafedabove. ^^^^ss:^ ^^^-.v^i^.-.-zj Erpv.-vvVN-.yj ^^:::i2:i^s3
Electric apparatus and appliances
Internet Archive · Library of Congress · Public Domain Mark 1.0. Free to use for anything.