Test run at Ascot, Los Angeles, CA, 1933 [image 22] 

Brick testing machine at 1218 Rio Vista Avenue, Los Angeles, CA, 1932 [image] 

Battery speed tests, Southern California, 1931 [image 3] 

Pump being installed in test well, Southern California, 1935 [image 1] 

Test run at Ascot, Los Angeles, CA, 1933 [image 9] 

Test run at Ascot, Los Angeles, CA, 1933 [image 10] 

Test run at Ascot, Los Angeles, CA, 1933 [image 4] 

Tube testing machine, Atwater Kent Radio, Southern California, 1930 [image 1] 

Test run at Ascot, Los Angeles, CA, 1933 [image 7] 

Test run at Ascot, Los Angeles, CA, 1933 [image 16] 

Test run at Ascot, Los Angeles, CA, 1933 [image 20] 

Composite of man looking at test tubes, Southern California, 1936 [image] 

Auto knock testing machine, Southern California, 1931 [image 6] 

Auto knock testing machine, Southern California, 1931 [image 4] 

Auto knock testing machine, Southern California, 1931 [image 2] 

Auto knock testing machine, Southern California, 1931 [image 1] 

Testing benches, Axelson Machine Works Co., Southern California, 1930 [image] 

Brake testing machine, Southern California, 1929 [image 2] 

Brake testing machine, Southern California, 1929 [image 3] 

Test run at Ascot, Los Angeles, CA, 1933 [image 13] 

Test run at Ascot, Los Angeles, CA, 1933 [image 14] 

Test run at Ascot, Los Angeles, CA, 1933 [image 8] 

Washing machine, test lab, Axelson, Southern California, 1931 [image 4] 

Washing machine, test lab, Axelson, Southern California, 1931 [image 1] 

Gasoline testing machine, Southern California, 1933 [image 5]