What are the classifications of instrument glass?

Flat type (flat panel perspective, flat type): With smooth observation and sealing surfaces, suitable for instruments that require smooth surface observation. ‌

Slot type (slotted type): With a smooth observation surface and a sealing surface on the back, it has multiple groove shaped edges and is suitable for instruments that require specific structural design. ‌

These classifications are based on the design requirements and functional characteristics of instruments. Flat glass is suitable for simple observation needs, while groove glass is suitable for instruments that require more complex structural designs to achieve specific functions. ‌