543-502 Mitutoyo Solar Indicator, .5" Range / 0.00005" Res
543-502B Mitutoyo Solar Indicator, .5" Range / 0.00005" Res
543-507 Mitutoyo Solar Indicator, .5" Range / 0.0005" Res
543-507B Mitutoyo Solar Indicator, .5" Range / 0.0005" Res