used okamoto automatic surface grinder ACC-1224DX used okamoto automatic surface grinder ACC-1224DX used okamoto automatic surface grinder ACC-1224DX used okamoto automatic surface grinder ACC-1224DX used okamoto automatic surface grinder ACC-1224DX used okamoto automatic surface grinder ACC-1224DX used okamoto automatic surface grinder ACC-1224DX used okamoto automatic surface grinder ACC-1224DX used okamoto automatic surface grinder ACC-1224DX