US 12,148,286 B2
Precision length measuring device
Nobuyuki Hayashi, Kanagawa (JP); Takefumi Kiwada, Gifu (JP); and Aki Hiroshima, Kanagawa (JP)
Assigned to MITUTOYO CORPORATION, Kawasaki (JP)
Filed by MITUTOYO CORPORATION, Kanagawa (JP)
Filed on Apr. 30, 2021, as Appl. No. 17/245,596.
Claims priority of application No. 2020-089086 (JP), filed on May 21, 2020.
Prior Publication US 2021/0366246 A1, Nov. 25, 2021
Int. Cl. G08B 5/22 (2006.01); G01B 21/16 (2006.01); G01L 1/22 (2006.01); G01P 7/00 (2006.01); G01P 15/00 (2006.01); H05B 47/105 (2020.01)
CPC G08B 5/22 (2013.01) [G01B 21/16 (2013.01); G01L 1/22 (2013.01); G01P 7/00 (2013.01); G01P 15/00 (2013.01); H05B 47/105 (2020.01)] 11 Claims
OG exemplary drawing
 
1. A precision length measuring device comprising: a display device; an illumination device configured to emit a light to the display device; an impact detector that detects impacts caused by hitting or falling; a memory; and a processor coupled to the memory and configured to execute a process, the process comprising: obtaining a measured value; obtaining information regarding a state in which the measured value is obtained; obtaining an evaluation of an impact history based on values detected by the impact detector, said values detected by the impact detector being a history of impacts applied to the precision length measuring device for a period other than while obtaining the measured value, as impact history evaluation information; and changing a color of the light emitted by the illumination device in accordance with the impact history evaluation information, wherein the display device displays the measured value.