Profits from scrap

by Chicago American Bureau of Engineering

A Quick Seller For Your Accessory Department

RED, WHITE AND GREEN BALLS

TELL SPECIFIC GRAVITY OF BATTERY SOLUTION

Simplest, most efficient and easiest to read battery tester ever yet offered to the battery owner. Unlike any hydrometer or tester on the market. Instead of the glass float used on ordinary hydrometers, which are hard to read and understand, it has three balls, colored red, white and green which tell the whole story.

Astonishingly simple to test a battery with it, because the following jingle regarding the three balls, and the positions they assume in the electrolyte or liquid tells the story—

“Floats all three, battery is charged fully.

Sinks the white, charge still right,

Sinks the green, charge is lean,

Sinks the red, charge is dead.”