B—Signify the center distance of reversed assembling movement's two mounting holes.
L—Signify the length of needle pivot (which means shaft gear).
Product Name: Bimetallic Assembling Movement
Material: Brass/stainless steel 304
Transmission ratio: 13.6 or 11.17
Movement's shaft gear: 10 or 12
Certificate: ISO9001; ISO14001
Used: Pressure gauge