Analog Test Equipment

Triplett Brand Analog Test Equipment by Jewell Instruments

Triplett is the brand name of the Test Equipment and Tools product group of Jewell Instruments.  Our Triplett test equipment product line brings over 100 years of experience providing the highest quality, most technologically advanced, rugged and reliable products in the marketplace. Combined with the most economical pricing available anywhere, Triplett products can’t be beat.

Click here to visit the Triplett website and learn more about the full line of Triplett products from Jewell Instruments.

Modutec S-Series

Model 310

The Model 310 is a classic handheld analog VOM with 18 useful ranges and functions

Product Description:

  • 18 Ranges and Functions
  • AC/DC Voltage to 1200V
  • DC Current to 0.6A
  • Resistance to 20M?
  • Drop Resistant, High-Impact Case
  • Diode Overload Protected Meter
  • Fused Resistance Ranges
  • Single Enclosed Range Switch
  • 3 year warranty
Modutec W-Series

Model 310-C

The Model 310-C is a classic handheld analog VOM with 18 useful ranges and functions, plus a polarity reversing switch.

Product Description:

  • 18 Ranges and Functions
  • AC/DC Voltage to 600V
  • DC Current to 0.6A
  • Resistance to 20M?
  • Decibel function for audio work
  • Polarity Reversing Switch
  • Greater Sensitivity on AC Volts
  • Drop Resistant, High-Impact Case
  • Diode Overload Protected Meter
  • Fused Resistance Ranges
  • Single Enclosed Range Switch
  • 3 year warranty
Modutec PB-Series

Model 310-TEL

The Model 310-TEL is a classic handheld analog VOM with specialized ranges for the telephone industry.

Product Description:

  • Hand-Held Analog VOM
  • Designed with the telco service person in mind
  • 16 Ranges and Functions
  • Polarity Reversing Switch
  • Also available as KS/CK-16979 (special order)
  • 3 year warranty
Modutec 2810/CLE8-Series

Model 60 3145

The Model 60 3145 is a classic Benchtop analog VOM with ruggedized construction and overload resistant electronics.

Product Description:

  • With our unique 3 fuse protection (including 2A/1000V fuse) the model 60 is, quite possibly, the best protected VOM in the industry
  • Diode overload protection and 2 fuse arrangement
  • Mirrored scale to reduce parallax error
  • Confidence Test to check batteries, fuses, leads and meter accuracy
  • Decibel function for audio work
  • 28 Ranges and Functions
  • High Impact Orange Case
  • AC/DC Voltage to 1000V
  • DC Current to 1000mA
  • Resistance to 10M?
  • Decibel ranges from -20dBm to +52dBm
  • Polarity Reversing Switch
  • AC Voltage frequency response to 40KHz typical
  • 3 year warranty
Modutec E-Series

Model 630 3030

The Model 630 3030 is a classic Benchtop analog VOM and has been a standard in the industry for decades.

Product Description:

  • Single range switch to help reduce chance of operator error
  • Diode overload protection and 2 fuse arrangement
  • Mirrored scale to reduce parallax error
  • Decibel function for audio work
  • All ranges are fuse protected
  • Thermoset plastic case
  • 25 Ranges and Functions
  • Glass meter window for added chemical resistance
  • Two input jacks to help minimize error
  • AC Voltage frequency response to 40KHz typical
  • Resistance measurement of 30V / 100M on Rx100K range for testing insulation
  • 3 year warranty
Modutec WM-Series

Model 8145 Kick Testers

The 8145 Kick testers are classic handheld analog VOMs specialty designed to “Kick Test” telephone lines.

Product Description:

  • Compact, reliable, industry standard
  • Checks line shorts, opens, & multiple ringers
  • Measures DC voltages and resistance
  • Ranges: points 0-100; DC volt 0-100
  • Polarity-reversing switch
  • R / 10 switch
  • Reverse switch for line checks
  • Available with and without leads & case
Railroad Testers
Modutec MD- & ME-Series

Railroad Tester Model 2000-2010

The Triplett line of Railroad Testers have microprocessor smarts and the industry preferred analog display. The Model 2000-2010 performs needed VOM tests, advanced Code and Peak tests, and Cab Signal tests (on appropriate models).

.Product Description:

  • Base unit with Cab Filters
  • Upgradable to 2001, 2002 or 2003
  • Auto Polarity in DC functions
  • Selectable DC Amps Polarity
  • Direct measurement of Code Parameters
  • Relay Contact On Time (dry contact) requires no adjustment
  • Ohmmeter Voltage Mode detects either polarity voltage including AC
  • Field replaceable protective window
Modutec MAS-Series

Railroad Tester Model 2001-2011

The Model 2000-2010 is a Railroad Tester with microprocessor smarts, and industry preferred analog display. The Model 2001-2011 performs needed VOM tests, advanced Code and Peak tests, and Cab Signal tests (on appropriate models).

.Product Description:

  • 100Hz and 250Hz Cab Filters
  • All pass position – bypass Cab Filters
  • Auto Polarity in DC functions
  • Selectable DC Amp polarity
  • Direct measurement of Code Parameters
  • Relay Contact On Time (Dry Contact) requires no adjustment
  • Ohmmeter Voltage Mode detects either polarity voltage including AC
  • Field replaceable protective window
Modutec 0MS- & MSQ-Series

Railroad Tester Model 2002-2012

The Model 2000-2010 is a Railroad Tester with microprocessor smarts, and industry preferred analog display. The Model 2002-2012 performs needed VOM tests, advanced Code and Peak tests, and Cab Signal tests (on appropriate models).

.Product Description:

  • 100Hz and 200Hz Cab Filters
  • All pass position – bypass Cab Filters
  • Auto Polarity in DC functions
  • Selectable DC Amp polarity
  • Direct measurement of Code Parameters
  • Relay Contact On Time (Dry Contact) requires no adjustment
  • Ohmmeter Voltage Mode detects either polarity voltage including AC
  • Field replaceable protective window
Modutec 250 Degree MC1-Series

Railroad Tester Model 2003-2013

The Model 2000-2010 is a Railroad Tester with microprocessor smarts, and industry preferred analog display. The Model 2003-2013 performs needed VOM tests, advanced Code and Peak tests, and Cab Signal tests (on appropriate models).

.Product Description:

  • 60Hz and 100Hz Cab Filters
  • All pass position – bypass Cab Filters
  • Auto Polarity in DC functions
  • Selectable DC Amp polarity
  • Direct measurement of Code Parameters
  • Relay Contact On Time (Dry Contact) requires no adjustment
  • Ohmmeter Voltage Mode detects either polarity voltage including AC
  • Field replaceable protective window
Modutec S-Series

Mitigator 3230

The Mitigator 3230 Telephone Test Set is specialized to aid in noise mitigation of POTS lines. It includes standard Noise Measurement Set (NMS)tests plus a Graphic Spectrum Display and Causal Analysis Mode.

Product Description:

  • Harmonic Noise Analysis
  • Includes “MitView” Data Extraction & Viewing System
  • Continuous On-Line Help
  • 60Hz Harmonic Table
  • Direct Access to Filters
  • “Green Window” Test
  • Standard Noise Measurement Features
  • Digital Signal Processing Technology using High
  • Resolution FFT
  • Spectral Update Time of 7.5 Seconds
  • 90dB On Screen Display
  • Harmonic Current Probe Input up to 100 Amps
  • Peak Finder
  • Analysis Mode
  • Weather Resistant
  • 1 year warranty
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Triplett Corporation was founded in 1904 in Bluffton, Ohio by Ray L. Triplett. Triplett’s first innovative product was the “Hot Wire” meter, an electrical test meter housed in a watch case. Innovation continued… the READRITE Model 201 tube tester in the 1920’s, the 1200 series Radio Tuning Tester in the 1930’s, and meters for the U.S. Signal Corps during World War II. In 1955 Triplett launched the renowned Model 310 hand-held analog volt/ohm meter, which is still manufactured and highly sought-after today. Triplett continued to innovate, launching test equipment for mining, railroad, and telecommunications. Acquired by Jewell Instruments in 2007, Triplett relocated to Jewell’s manufacturing facility in Manchester, New Hampshire.