Martel Electronics BetaGauge 3II - Manual (Page 16)

1-1 General Description
1- General Description
Overview
The BetaGauge II pressure calibrator is the most
advanced and accurate handheld pressure calibrator
available today. Its 3½ inch diagonal liquid crystal
display (LCD), membrane keypad, and user-prompt
programming make the BetaGauge II easy to operate.
An illustration is shown below:
Figure 1-1 BetaGauge II