specification:

H paragraph: [Waterproof and oil resistant] high quality -150mm long

B paragraph: [Waterproof and oil resistant] high-quality long-200mm

C: 150mm long [digital full metal] stainless steel (neutral, this caliper fine workmanship, hand wheel can be fine-tuning, more convenient to use)

A: 200mm long [digital full metal] stainless steel (neutral, this caliper fine workmanship, hand wheel can be fine-tuning, more convenient to use)

J: 150mm long plastic head stainless steel (neutral)

D: 200mm long plastic head stainless steel (neutral)