. "No restrictions on access"@en . "Slide rule with case"@en . . . "a: slide rule b: case\n\nSlide rule inscribed Nr. 11 ZR Albert Nestler A-G. LAHR I/B"@en . "The ruler and case were retreived by PFC David F. Busch, an American soldier who was stationed in Europe during WWII."@en . "irn84299" . "No restrictions on use"@en . . . . "a: Height: 5.875 inches (14.923 cm) | Width: 1.250 inches (3.175 cm) | Depth: 0.188 inches (0.478 cm)\n\nb: Height: 6.125 inches (15.558 cm) | Width: 1.562 inches (3.967 cm) | Depth: 0.250 inches (0.635 cm)"@en . "The slide ruler was donated to the United States Holocaust Memorial Museum in 2014 by Tara Barenok, the great-niece of David F. Busch."@en .