⑴ Beveling and flat edge selctor ⑵ test button
(3)Clamp pressure selector ⑷GL CR selector
⑸Metal and planel beating selector ⑹ Ninus(-) button
⑺Plus (+) button ⑻ Re-edging button
⑼ Shift (left) button ⑽ Shift(right) button
⑾ Start button ⑿ Stop button
⒀ Lens-clamping button ⒁ Lens-loosening button
4、 LE-320/400/420 control panel
(1) PC、GL、Cr lens selector
(4) Polishing and impolishing selector
(5)Beveling and flat edge selctor
Others function same as LE-300/310/310P