Hand Tools
50N/5kg/11lb/180oz Trigger Pull Gauge, Belt Tension Gauge w/ 6 Force Gauge Attachments M6 & Backlit LCD, Digital Dynamometer Push Pull Force Gauge Thrust Tester w/Portable Case
Trigger pull gauge measures force up to 50N/5kg/11lb/180oz, accurate to ±1%, one button to switch between 4 units Belt tension gauge designed with 3 working modes: real-time force, peak value, and first peak value, with buzzer to alarm pre-set...
https://www.bizrate.co.uk/handtools/50n-5kg-11lb-180oz-trigger-pull-gauge-belt-oid32967503345.html