BSP 1 1/4' zaren a cikin nau'in firikwensin matakin nau'in shine kayan aiki mai ƙarfi da daidaitacce don saka idanu matakan ruwa a cikin tankuna daban-daban. Gina daga bakin karfe 304, tare da haɓaka bakin ƙarfe na zaɓi na 316 don haɓaka juriya mafi girma, an tsara shi don jure yanayin yanayi mai tsauri. Tsawon firikwensin yana iya canzawa daga 110mm zuwa 3000mm tsayin da zai iya yin tsayayya da girman tanki daban-daban. 0-190 ohm ko 240-33 ohm, tare da zaɓuɓɓuka don fitowar halin yanzu ko ƙarfin lantarki, tabbatar da dacewa tare da tsarin kulawa daban-daban.