Aristo studio slide retailer ruler 0968 with lineal 1367 and conversion table in orignal case 1959 vintage mid century DBGM Germany

retailer Aristo studio slide ruler 0968 with lineal 1367 and conversion table in orignal case 1959 vintage mid century DBGM Germany

brand: Aristo Studio Made in Germany (DBGM)
item: slideruler incl. lineal and conversion table in case
type: 0968 / 1367
period: 1959
overall length: 13.38 Inches (34cm)
condition: in good condition - with signs of use