Bill Sweetman described how he would use graph paper and a Sinclair Cambridge calculator to try figure out the specifications of Soviet warplanes during the Cold War.
By Richard J. Terry [Public domain], via Wikimedia Commons
Aviation News
Bill Sweetman described how he would use graph paper and a Sinclair Cambridge calculator to try figure out the specifications of Soviet warplanes during the Cold War.
By Richard J. Terry [Public domain], via Wikimedia Commons