Electronics-Wire and cable's customers have bought 11 kinds of detection instruments here
Level 1:
Statement: The following testing instruments are based on the customer's purchase behavior, not officially recommended, only for reference!
Genuinegoods
Raul Formula Guide with 215 international standard Colors
RDS 24 #3/8 "Mayer Rods WFT 54.9μm Length 400mm
GSB GSB05-1426-2001 Oily Coatings GSB 83 Colors
Japan OSP-09/400 Mayer Rods WFT 9μm length 400mm
Thermax (TMC) Thermax 8 grid B board warm paper, model 08STHERNGBD
TQC VF2093 Immersion ISO Viscosity Cup aluminum alloy/8mm