Test Instruments

Test instruments are essential tools for accurate diagnostics in the field, helping technicians and homeowners stay safe while fine-tuning equipment. Achieve precise measurements with top-quality products such as voltage testers, static pressure kits, water hardness test strips, infrared thermometers, and pocket-sized thermometers. Our instruments offer convenient features like data hold, auto power-off, integrated storage, circular laser targeting, and built-in work lights. Explore a wide selection of trusted brands, including UEi Test Instruments, MA-Line, and Klein Tools, available now at Jackson Systems & Supply for all your testing needs!

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Showing 337–384 of 485 resultsSorted by popularity

Front Liquid Level Sight Glass Gauge

York

SKU: 026-37571-000
$562.55
MSRP: $646.93
You save 15%
York 026-37571-000 Front Liquid Level Sight Glass Gauge quantity
Sight Glass for York HVAC Systems

York

SKU: 026-37548-000
$72.66
MSRP: $83.56
You save 15%
York 026-37548-000 Sight Glass quantity
Sight Glass Cap Moisture Indicator for Refrigeration Systems

York

SKU: 026-32800-000
$87.79
MSRP: $100.96
You save 15%
York 026-32800-000 Sight Glass Cap Moisture Indicator quantity
Condenser Sight Glass for York Systems

York

SKU: 026-17581-000
$56.60
MSRP: $65.09
You save 15%
York 026-17581-000 Condenser Sight Glass quantity
Sight Glass for York HVAC & Refrigeration Systems

York

SKU: S1-025-30899-000
$3.11
MSRP: $3.58
You save 15%
York S1-025-30899-000 Sight Glass quantity
1-5/8 in. ODF Refrigeration Sight Glass, SA-213 Series

York

SKU: S1-SV-700598
$257.51
MSRP: $296.14
You save 15%
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Sight Glass Male Flare x Swivel Connection

York

SKU: S1-SV-700468
$113.13
MSRP: $130.10
You save 15%
York S1-SV-700468 Sight Glass Male FLRxSwivel quantity
3/8 SAE Refrigeration Sight Glass

York

SKU: S1-700091
$73.99
MSRP: $85.09
You save 15%
York S1-700091 3/8 SAE Refrigeration Sight Glass quantity
MBV-5000 Test Valve for Refrigeration & HVAC Systems

Danfoss

SKU: 061B7013
$256.44
MSRP: $294.91
You save 15%
Danfoss 061B7013 MBV-5000 Test Valve quantity
7/8″ x 7/8″ ODF SGN22S Refrigeration Sight Glass

Danfoss

SKU: 014L0186
$49.24
MSRP: $56.63
You save 15%
Danfoss 014L0186 7/8" x 7/8" ODF SGN22S Refrigeration Sight Glass quantity
1/2″ ODF SGP 12S N Refrigeration Sight Glass

Danfoss

SKU: 014L0183
$30.16
MSRP: $34.68
You save 15%
Danfoss 014L0183 1/2" ODF SGP 12S N Refrigeration Sight Glass quantity
1/2″ NPT SGRN Refrigeration Sight Glass

Danfoss

SKU: 014L0006
$33.13
MSRP: $38.10
You save 15%
Danfoss 014L0006 1/2" NPT SGRN Refrigeration Sight Glass quantity
Sight Glass Socket for Refrigeration Systems

Danfoss

SKU: 014-1603
$29.95
MSRP: $34.44
You save 15%
Danfoss 014-1603 Sight Glass Socket quantity
IR Sensor Thermocouple Handheld, SKU 2283281

Daikin-McQuay

SKU: 2283281
$680.99
MSRP: $783.14
You save 15%
Read more
Total Test All-In-One HVAC Diagnostic Kit

Carrier

SKU: TT1-002
$481.69
MSRP: $553.94
You save 15%
Carrier TT1-002 Total Test All-In-One HVAC Diagnostic Kit quantity
Premier Leak Detection Board for Carrier Systems

Carrier

SKU: HK50AA039
$2,782.78
MSRP: $3,200.20
You save 15%
Carrier HK50AA039 Premier Leak Board quantity
BACnet Configuration Tool for Building Automation

Carrier

SKU: EQT1-5
$1,971.90
MSRP: $2,267.69
You save 15%
Carrier EQT1-5 BACnet Configuration Tool quantity
Solenoid Valve with Integrated Sight Glass

Carrier

SKU: EF660019
$829.55
MSRP: $953.98
You save 13%
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Sight Glass for Carrier HVAC Systems

Carrier

SKU: 5F20-152
$39.16
MSRP: $45.03
You save 15%
Carrier 5F20-152 Sight Glass quantity
Network Service Tool V Kit for Carrier Systems

Carrier

SKU: 33CNNSTKIT03
$3,065.90
MSRP: $3,525.79
You save 15%
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Wireless Service Tool for Carrier HVAC Systems

Carrier

SKU: AWSTCWS01
$221.11
MSRP: $254.28
You save 15%
Carrier AWSTCWS01 Wireless Service Tool quantity
3/8″ Female x Male Flare 650 PSI Moisture Indicator

Beckett

SKU: 5432
$23.24
MSRP: $26.73
You save 15%
Beckett 5432 AMI-1FM3 3/8" Female x Male Flare 650 PSI Moisture Indicator quantity
Sight Glass for Carrier Refrigeration Systems

Carrier

SKU: 323017-201
$51.73
MSRP: $59.49
You save 13%
Carrier 323017-201 Sight Glass quantity
Refrigeration Sight Glass for Carrier Systems

Carrier

SKU: 06EA402403
$53.69
MSRP: $61.74
You save 13%
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5/8″ x 12″ Regular Sight Glass for Hydronic & Steam Systems

Conbraco Industries

SKU: 9858R-12
$18.58
MSRP: $21.37
You save 13%
Conbraco Industries 9858R-12 5/8" x 12" Regular Sight Glass quantity
Redline Boiler Sight Glass, 36″, 5/8″ Diameter

Conbraco Industries

SKU: 9858P-36
$261.04
MSRP: $300.20
You save 15%
Conbraco Industries 9858P-36 Redline Boiler Sight Glass, 36", 5/8" Dia. quantity
Polished Bronze Water Gauge, 1/2″ NPT, 5/8″ OD x 12″ Standard Glass

Conbraco Industries

SKU: 25-501-00
$324.28
MSRP: $372.92
You save 13%
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1/2″ NPT Rough Bronze Liquid Level Gauge, 5/8″ OD x 12″ Glass

Conbraco Industries

SKU: 24-651-00
$728.65
MSRP: $837.95
You save 13%
Conbraco Industries 24-651-00 1/2" NPT Rough Bronze Liquid Level Gauge quantity
1/2″ NPT Rough Bronze High Pressure Liquid Level Gauge

Conbraco Industries

SKU: 24-601-00
$697.99
MSRP: $802.69
You save 15%
Conbraco Industries 24-601-00 1/2" NPT Rough Bronze Liquid Level Gauge quantity
3/4″ NPT, 3/4″ OD x 16″ High Pressure Glass Liquid Level Gauge

Conbraco Industries

SKU: 24-353-00
$617.39
MSRP: $710.00
You save 13%
Conbraco Industries 24-353-00 3/4" NPT Rough Bronze Liquid Level Gauge quantity
1/2″ NPT Rough Bronze Liquid Level Gauge, 12″ High Pressure Glass

Conbraco Industries

SKU: 24-351-00
$607.59
MSRP: $698.73
You save 13%
Conbraco Industries 24-351-00 1/2" NPT Rough Bronze Liquid Level Gauge, 12" High Pressure Glass quantity
1/2″ NPT Rough Bronze Liquid Level Gauge Valve w/ Ball Checks

Conbraco Industries

SKU: 24-350-03
$583.48
MSRP: $671.00
You save 15%
Conbraco Industries 24-350-03 1/2" NPT Rough Bronze Liquid Level Gauge Valve quantity
Rough Bronze High Pressure Liquid Level Gauge, 1/2″ NPT

Conbraco Industries

SKU: 24-350-00
$667.30
MSRP: $767.40
You save 13%
Conbraco Industries 24-350-00 Rough Bronze High Pressure Liquid Level Gauge, 1/2" NPT quantity
1/2″ NPT Rough Bronze Liquid Level Gauge, 250 PSI Rated

Conbraco Industries

SKU: 24-302-00
$584.03
MSRP: $671.63
You save 13%
Conbraco Industries 24-302-00 1/2" NPT Rough Bronze Liquid Level Gauge, 250 PSI quantity
Rough Bronze High Pressure Liquid Level Gauge, 1/2″ NPT Male

Conbraco Industries

SKU: 24-301-00
$584.03
MSRP: $671.63
You save 13%
Conbraco Industries 24-301-00 Rough Bronze High Pressure Liquid Level Gauge, 1/2" NPT quantity
Stainless Steel High Pressure Liquid Level Gauge, 1/2″ NPT

Conbraco Industries

SKU: 23-450-00
$2,014.69
MSRP: $2,316.89
You save 13%
Conbraco Industries 23-450-00 Stainless Steel High Pressure Liquid Level Gauge quantity
1/2″ NPT Rough Bronze Water Gauge, 5/8″ OD x 12″ Glass

Conbraco Industries

SKU: 20-601-00
$463.56
MSRP: $533.09
You save 13%
Conbraco Industries 20-601-00 1/2" NPT Rough Bronze Water Gauge, 12" Glass quantity
3/4″ NPT Rough Bronze Water Gauge, 16″ Standard Glass

Conbraco Industries

SKU: 20-207-00
$214.20
MSRP: $246.33
You save 13%
Conbraco Industries 20-207-00 3/4" NPT Rough Bronze Water Gauge, 16" Glass quantity
1/2″ NPT Rough Bronze Water Gauge, 12″ Standard Glass, 400 PSI

Conbraco Industries

SKU: 20-205-00
$164.75
MSRP: $189.46
You save 13%
Conbraco Industries 20-205-00 1/2" NPT Rough Bronze Water Gauge, 12" Glass quantity
Bronze Water Gauge, 3/8 in. Connection, Series 20101

Conbraco Industries

SKU: 20-101-03
$128.50
MSRP: $147.78
You save 13%
Conbraco Industries 20-101-03 Bronze Water Gauge, 3/8 in., Series 20101 quantity
Sightglass Kit for Copeland Compressor Systems

Copeland

SKU: 998-0010-00
$128.92
MSRP: $156.61
You save 18%
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Temperature/Pressure Gauge for Boiler Systems

Velocity Boiler Works

SKU: 950039
$49.30
MSRP: $56.70
You save 15%
Velocity Boiler Works (Crown) 950039 Temperature/Pressure Gauge quantity
Sight Glass for Bosch HVAC Systems

Bosch HVAC

SKU: 7098575
$40.61
MSRP: $46.70
You save 15%
Bosch 7098575 Sight Glass quantity
Thermomanometer With Locking V

Bosch HVAC

SKU: 5900076
$121.80
MSRP: $140.07
You save 15%
Bosch 5900076 Thermomanometer With Locking V quantity
Observation Port Glass, OEM Boiler Replacement Part

Burnham Boiler

SKU: 8026032
$52.17
MSRP: $60.00
You save 15%
Burnham Boiler 8026032 Observation Port Glass quantity
Sight Glass with Standard Shank — OEM Boiler Replacement

Burnham Boiler

SKU: 111780-01
$155.94
MSRP: $179.33
You save 15%
Burnham Boiler 111780-01 Sight Glass with Standard Shank quantity
2.5″ Combination T&P Gauge, 0–75 PSI / 70–320°F

Burnham Boiler

SKU: 100282-03
$106.95
MSRP: $122.99
You save 15%
Burnham Boiler 100282-03 2.5" T&P Gauge 0–75 PSI / 70–320°F quantity
Rough Service Lead Detector for Demanding Environments

BAPI

SKU: BA/RLD-D-BB
$212.31
MSRP: $244.16
You save 15%
BAPI BA/RLD-D-BB Rough Service Lead Detector quantity

Test Instruments

Brand

Category

Voltage

Temperature

Brand

Category

Voltage

Temperature