The HP 5314A is a 100 MHz universal counter with a 7-digit LED display, capable of measuring frequency, period, time interval, totalize, and ratio. Its key specifications include a frequency range of 10 Hz to 100 MHz (Channel A) and 10 Hz to 2.5 MHz (Channel B), a sensitivity of 25 mV rms to 100 MHz, and a 1 MΩ input impedance. It also features selectable trigger slope and attenuation and can be equipped with options for a high-stability time base or a battery pack. 

General specifications 

• Display: 7-digit, 7-segment LED display
• Functions: Frequency, Single-Shot Period, Period Average, Time Interval, Totalize, Ratio, Self Check
• Time Base: 10 MHz frequency; aging rate of <3 parts in seventh power per month
• Dimensions: 238 mm W x 98 mm H x 276 mm D (9.37×3.86×10.87 in)
• Weight: 4.4 lbs (2.0 kg)
• Operating Temperature: 0° to 50 °C 

Untested but does turn on