Jean_LAMESCH_Sliderules_Collection_BOX_JL10

1754_PICKETT_600_ES_155mm

1754_PICKETT_600_ES_155mm

Pickett 600-ES : a 12 scales 34g "heavy" pocket aluminium duplex sliderule from the US. Taken by the first 5 Apollo teams to the moon,as a backup in case of computer failure . Leather case. More here.