Simpson 303 - VTVM

Vacuum Tube Volt Meter

Special Guest Meter Page

The Simpson 303 is actually a Vacuum Tube Volt-Ohmeter.

Inputs are made using BNC cables.

In 1957 this model listed for $68.00, the roll top case version was $76.00.

A copy of the Simpson 303 manual can be downloaded here.

Controls include: Ohms zero adjustment, AC - DC Voltage / Ohms selector switch,

and a 5 position Ohms Range selector switch.

Back view of the circuit board and view of the rear of the case.

A side view of the component layout.

The other side, component layout. The battery used in this model are a single 1.5 volt cell.

Line power is 115VAC 60Hz.

Also in Mark's collection is this nice looking Hickok 209A Vacuum Tube Volt - Ohm - Milliammeter.

This model was available from the early 1950's to the mid 1960's, and sold new for $133.00 in 1951.

A copy of the Hickok 209A manual can be downloaded here.

Simpson 303 VTVM Specifications

DC VOLTAGE

Ranges 1.2V, 12V, 60V, 300V, 1200V

AC VOLTAGE

Ranges 1.2V, 12V, 60V, 300V, 1200V

DECIBEL

5 Ranges -20 to +63dB * Reference 0dB= 1mW into 600Ω

RESISTANCE

Ranges Rx1, Rx100, Rx1K, Rx10K, Rx1MEG

All photographs shown on this Guest Meter Page are:

 Copyright © 2009 - Mark Zacharias - All Rights Reserved 

Thank you for sharing this meter with the visitors to Simpson260.com

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