Cadillac Motometer, circa 1925

Summary

Automobiles often came without temperature gauges before the early 1930s, so enterprising manufacturers sold aftermarket motometers. Mounted on a car's radiator, these devices measured and displayed coolant water vapor temperature, notifying drivers if their automobiles were in danger of overheating. Moto-Meter Co. Inc. dominated the American market, producing the popular Boyce motometer and others featuring an automotive manufacturer's name or logo.

Automobiles often came without temperature gauges before the early 1930s, so enterprising manufacturers sold aftermarket motometers. Mounted on a car's radiator, these devices measured and displayed coolant water vapor temperature, notifying drivers if their automobiles were in danger of overheating. Moto-Meter Co. Inc. dominated the American market, producing the popular Boyce motometer and others featuring an automotive manufacturer's name or logo.

Material

Metal
Glass (Material)
Brass (Alloy)
Enamel (Fused coating)

Dimensions

Height: 5.5 in

Width: 3.375 in

Thickness: 1.375 in

Inscriptions

On obverse and reverse of case: PATENTED / MAY-13-13 / MAR-17-14 / BOYCE / MOTO-METER / PATENTED / JULY-16-(?) / AUG-13-18 / THE MOTOMETER CO, INC. / LONG ISLAND, N.Y. U.S.A On obverse of insert: (Cadillac logo) / MADE ESPECIALLY / FOR / CLAUDE NOLAN, JACKSONVILLE, FLA. On reverse of insert: DANGER STEAM / SUMMER AVERAGE / A COOL MOTOR CAUSES / GASOLINE WASTE / USE RADIATOR COVER / A SUDDEN RISE / INDICATES TROUBLE / STOP AND INVESTIGATE / COOL MOTOR

Related Content

Connect 3

Discover curious connections between artifacts.

Learn More