- Similar to CUMSA’s GS.226616、GS.368619、GS.421024 Features：
- Designed for two steps opening molds，The gradual scale allows selection of the first opening.
- After selecting the required stroke， fix the scale lever with the spacer.
The working principle of products：
- After the 1st mold opened， the arrow of the housing(1) will point to 0 calibration of the control bar(3) ，the activity block is on moving， till insert into R groove of the control bar(3) completely.
- When the activity block on moving， the Latch bar(6) is opening till out of housing completely.The catch(12) are bouncing under the force of spring， and lock the activity block， this is the 2nd mold opened finish.
- The Latch bar insert into the housing again in the 1stmold closed， the latch bar press the catch， and release the activity block till the 2ndmold closed finish.