The limit value or the tolerance of the crankshaft deflection is usually been specified by the engine makers.
That’s why the limit value on Prisma DI-5C can be adjusted after engine maker’s recommendations.
The default limit value on Prisma DI-5C Deflection Indiactor is -0,500 to +0,500 mm but it can be adjusted after your preferences.

CLICK TO DOWNLOAD manual for Prisma DI-5C, crankshaft deflcetion indicator from Prisma Tibro.