=MROUND (1.6;0.5) 1.5ཕྱིར་ལོག་པ་སྟེ་ 1.6 དང་ཐག་ཉེ་ཤོས་ཀྱིས་ 0.5 ཡི་ཧྲིལ་གྲངས་ལྡབ་གྲངས་སོ།
Answer as a general rule, figure on <0.060 " (approximately 1.5mm), the most thin ring we have made is 0.6 mm.
Music, Opinion, Size