JPO detection update                       back to UPGRADES    

- simple to install  kit (all parts including fixings supplied), no drilling necessary, reliable, positive

Standard Bell & Howell JUMBO PostStar detection setup

Parts above numbered 10,12,13,20,21,22,23,24 replaced by those pictured below

features : once set the knurled knobs will not vibrate loose, being held securely in place by plastic inserts   flexible spring steel detection spring much more reliable than old B & H 'paddle' much cheaper to replace spring