Government & Military Tank Gauges
Defense and government operations demand equipment that performs reliably, meets strict procurement rules, and reduces risk in the field and at the depot. For over 75 years, Krueger Sentry Gauge has manufactured instrumentation integral to the government, military, and defense sectors — built in Green Bay, Wisconsin from components produced by us or other American manufacturers in full compliance with the Buy American Act.
Our gauges are made primarily from stainless steel (316L), with chemically resistant plastics and other materials available, and our in-house machine shop lets us meet specialized size, fitting, and material requirements. Our line for government and military applications includes:
- Custom-Spec Gauges
- Liquid-Level Gauges
- Overfill Alert Gauges
- Leak Detection Gauges
Government & Military Tank Gauge Applications
From fuel depots to field operations, government and military users store a range of fuels and chemicals that require accurate, dependable level measurement. As a Buy American Act–compliant, American-made manufacturer, we’re well positioned to serve these buyers. Media we commonly gauge include:
- Unleaded kerosene
- Naphtha-kerosene blend
- Avgas
- Biofuels
- Oil
- Butane
- Propane
- Sulfuric acid

American-Made and Buy American Act Compliant
For government and military buyers, domestic manufacturing is both a quality advantage and a procurement requirement. Krueger Sentry Gauge produces its components in-house or through trusted American partners, and builds gauges in materials matched to your media. Applications we support include:
Fuel & Kerosene Gauges
Unleaded kerosene, kerosene blends, and biofuels are staples of government and military fuel operations. Our gauges give personnel accurate readings for safe loading, storage, and dispensing.
Aviation Fuel (Avgas) Gauges
Avgas fueling requires reliable indication under demanding conditions. Our stainless-steel gauges are built for accuracy and durability in these high-consequence operations.
Propane & Butane Gauges
Propane and butane storage calls for gauges built for pressurized, hazardous service. We match construction to the application so readings stay dependable.
Corrosive Chemical Gauges
Media such as sulfuric acid demand materials selected for aggressive service. We engineer wetted parts to suit, so your instruments last in tough conditions.
Oil Storage Gauges
Fuel and lubricating oil are staples of government and military operations. Our gauges give personnel accurate readings for safe storage, loading, and dispensing at depots and in the field.
Biofuel Gauges
Biofuels can be harder on standard materials than conventional fuel. We match the wetted components to the blend so accuracy holds up over the life of the gauge.
Naphtha-Kerosene Blend Gauges
Wide-cut naphtha-kerosene blends are common in military fuel logistics and call for reliable indication during storage and transfer. We build gauges suited to these fuels so readings stay accurate in the field.
Diesel Fuel Gauges
Diesel powers vehicles, generators, and equipment across defense operations. Our gauges give accurate readings on bulk tanks and day tanks so fuel is always accounted for.
Built for the Missions That Can’t Fail
Government and military operations leave no room for equipment that lets you down, and procurement rules leave no room for foreign-sourced shortcuts. At Krueger Sentry Gauge, we’re proud that our American-made, Buy American Act–compliant instrumentation helps these buyers reduce risk and operate with confidence.
Frequently Asked Questions
Got questions? Get answers instantly by browsing our FAQs below, chatting with our AI assistant, or reaching our to our team directly.
What do we use as a part number?
At Krueger Sentry, we don’t use classic part numbers. Everything is description-based. Refer to your product’s Spec Page (materials options) and the Order Info (tank measurements) page for more information. Example Part Number: – H-2-48 + 12 w/glass (H signifies the type of gauge, 2 is the size opening, 48 is the tank depth, 12 is the extension, and everything after that is the options you want to be included.
Which liquid level monitor is the right choice for me?
When choosing a liquid level gauge, different factors can change which sight gauge is best for you. The basic factors that motivate people to buy each type of gauge are as follows.
- Economical sight gauge- At-A-Glance Direct Reading
- Versatile sight gauge- Therma Gauge
- Small tank monitor, under 12 inches – The L Gauge
- Standard Barrel Level Gauges – Barrel Gauge
- Up to 12 feet of mechanical remote capability – Remote Reading Gauge
- Durability – GFK Gauge – you can achieve this durability by ordering a therma gauge with a gauge guard as well.
How do I find or locate a Krueger Sentry Gauge distributor?
Search our Preferred Distributor Page. Don’t see a distributor you want to use? Call me. Lee Geurts: 920-434-8860 ext 204
Which sight gauge do you recommend most often to your customers?
I try to sell the Therma gauge to most people. It is nearly as inexpensive as the At A Glance Gauge, but you have more control over your swing arm. Plus, this level gauge can be fitted with the most options.
What is the difference between the Type D At a Glance Level Gauge and the Type H Therma Level Gauge?
The Swing arm on the Type D Gauge is fixed. When you thread in the gauge, the swing arm spins inside the tank and will end up facing in a random direction. The swing arm on the Type H Gauge can be aimed in the exact direction you want it to swing, and when you thread the gauge in it does not spin inside the tank.
How long is the swing arm on a level gauge?
The arm is always half the depth of your tank.
How do I order a custom-size level gauge?
In order to get an accurate gauge for your tank, we take two measurements into consideration. First, we measure, in inches from top to bottom, what the distance is from empty to full, known as tank depth. Second, the distance from the full mark to the gauge fitting on top is also known as an extension length. Sometimes this measurement comes out to zero.
How do I prevent my tank gauge from getting damaged by the sun and weather?
Ordering upgraded options such as Solid Glass Tops and Gauge Guards will make your Krueger Gauge nearly impervious to weather, sun, and damage.
Can I repair just the top of my Tank Gauge, or do I need to replace the whole thing?
If your gauge still seems functional, you can replace just the top components by ordering the corresponding repair kit. Repair Kits are available for all gauge types and come in a variety of material options for added durability, which can be found in the Tank Gauge Accessories.
What is the recommended maintenance/testing for Krueger Leak Gauges?
Krueger Sentry provides a Leak Gauge Functionality / Calibration Testing Report with inspection procedures for inspectors/technicians. Please contact us with any questions.
