Boyce Moto Meter Value Guide

The Boyce Moto Meter is a quintessential automotive accessory from the 1928-1931 era, designed by Harrison H. Boyce to monitor engine heat before dashboard gauges were standard. This specific model, featuring a distinctive laurel wreath rim, is highly collectible for its functional history on iconic vehicles like the Ford Model A and Model T.

What affects the value of Boyce Moto Meter?

• The condition of the chrome plating on the brass body, as pitting or peeling significantly reduces the $225-$250 valuation.
• The integrity of the internal thermometer; a broken or separated liquid column lowers the item's utility and collector appeal.
• Clarity of the glass lens and the legibility of the temperature scale markings.
• Originality of the mounting hardware and whether the laurel wreath detailing remains crisp and well-defined.

How to Identify Boyce Moto Meter?

• Look for the 'Boyce Moto Meter' branding and patent dates etched into the glass or metal housing.
• Verify the presence of the decorative laurel wreath rim, which is characteristic of this specific 1928-1931 production period.
• Check for the original liquid-filled glass thermometer tube centered within the chrome-plated brass frame.
• Inspect the base for the correct threading designed to mount directly onto a vintage radiator cap.

History of Boyce Moto Meter

Invented by Harrison H. Boyce and patented in 1912, the Moto Meter was an essential accessory for early motorists before dashboard gauges became standard. This specific model features a laurel wreath rim and was commonly mounted on Ford Model A and Model T radiators to provide the driver with a visual indication of radiator steam and coolant temperature.