SANWA YX-360TR E-L-B multitester, showing outside and inside, convert to ESR later

I buy this product, to make a ESR capacitor tester, cheap product in shopee... Here the link of product
shopee.ph/product/67986459/55...
Assembling ESR part 1
• ESR Assembling Using M...
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[@user-jl9jx6ru6g]

😢😢😢😢😢😢

[@heinsoe8013]

In this multimeter what voltage of ziner diode using

[@31jobert]

czcams.com/video/fJerJPgWsA8/video.html
I use this for making ESR sir