Luis María Benítez space memorabilia collection

Artifact: Slide rule used by engineer Gary Allgire during the Apollo Program.
Dimensions: 5.2 (5.9 cursor) x 30.8 cm (slide rule), 33 x 8 cm (case).
Weight: 135 gr (slide rule), 188 gr (case).

Description:
Pickett & Eckel Model N4-ES slide rule with a copyright date of 1959. It was used by NASA structural engineer Gary Allgire during the Apollo Program.

Gary Allgire was born in St. Louis, Missouri. After graduating from university he was invited by NASA to join the John F. Kennedy Space Center, where he worked for a total of 33 years for the Apollo Program, the Apollo-Soyuz Test Project and the Space Shuttle Program.

Above: Jeff Hedges (NASA Operations), Gary Allgire, and Mike Wideman (Rockwell International) near the escape tower of Apollo 17 at the launch pad. Credit: Gary Allgire/American Space Museum (YouTube).

More information:

Gary Allgire interview at the American Space Museum in 2022

Slide rule: C and D scales

Slide rule: Proportion, percentage, squares and square roots