The nylon body and window make these indicators shatter resistant.

Made with clear, shatter-resistant plastic, these indicators don't require a shield to protect them like other oil-level indicators, so you can check your hydraulic fluid or oil level from any angle.

Check the level of liquids containing chemicals such as alcohol-based solutions, boric acid, and sodium bicarbonate.

Shut-off valves stop flow so you can clean and replace gauge glass without removing these indicators from your equipment.

Check both the temperature and the hydraulic fluid or oil level in a pressurized system.

Replace existing gauge glass or combine with valves and guard rods to build your own level indicator.

Avoid overfilling—these indicators pop up when your tank is almost full.

Monitor liquid level in applications that have vibration, high pressures, and high temperatures. These indicators are also known as armored level gauges.

Use these gaskets with heavy duty level indicators to seal the glass.

Also known as level loggers, level sensors, and pressure transducers, these transmitters sit at the bottom of your tank in applications that make traditional mounting difficult.

For use with water, hydraulic fluid, and diesel, install these gauges through the top of your tank.

Install these gauges through the top of your tank to monitor diesel, fuel oil, or gasoline level.

Measure water, hydraulic fluid, or diesel fuel level in your drum.

Easily view liquid movement and level changes from a distance—these sights have an indicator ball inside the glass window.

View tank contents from multiple angles through the plastic domed window.

Continuously monitor oil quality through the clear plastic reservoir, and use the attached drain valve to remove water accumulation.

Often used in kilns and other heating equipment, these sights have a quartz window that can withstand temperatures up to 1600° F. They're also known as peep sights.

Press these sights into a hole in your tank wall; no additional mounting nuts are needed. They mount from the outside.

Fasten the extended flange to tank walls.

Add a window to your high-vacuum system. With a pane of glass sealed inside a high-vacuum CF flange, these sights bolt onto vacuum chambers, tee fittings, and manifolds.

Install these switches into a threaded connection in your tank wall from outside the tank.

Use the included bracket to mount these switches to the inside of your tank.

For visual monitoring and easy access, these switches are housed in a clear acrylic reservoir that mounts to the outside of your tank.

For use in locations with flammable gases and combustible dust, this switch is UL listed and CSA certified for Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G.

Install these switches through a tank wall.

Mount these switches from outside the tank through a threaded connection at the top or bottom of your tank.

Install these switches into a threaded connection in your tank wall from outside the tank.

Hang these free-floating switches in your tank for liquid-level monitoring that doesn't require installation through a tank wall.

For use in locations with flammable gases and combustible dust, this switch is UL listed and CSA certified for Class I, Divisions 1 and 2, Groups C and D; and Class II, Divisions 1 and 2, Groups E, F, and G.

Install these switches into an unthreaded hole at the top or bottom of your tank and secure with a nut from inside the tank.

Use high-frequency sound waves to detect chemical level.

Install these switches into a threaded connection in your tank wall from outside the tank.

Mount these switches through an unthreaded hole in your tank wall and secure with a nut from inside the tank.

Mount these switches into a threaded connection at the top or bottom of your tank.

Cut the probes on these switches to fit the size of your tank.

Install one of these relays to actuate equipment that has a higher current rating than your switch.

A polypropylene float makes these switches buoyant even in viscous liquids.

Control water levels in spaces where a rod and lever won’t fit; these float valves have an internal float and connect to your pipe.

Smaller than other float valves, these are sized for containers with limited space.

With a durable bronze body, these float valves can be used with water and hydraulic fluid.

Able to withstand higher temperatures than PVC float valves, these valves have a temperature range of 35° to 175° F.

Commonly used in ice-making machines, these valves have floats that rest inside a clear plastic reservoir.

Smaller than other float valves, these are sized for containers with limited space.

Made of stainless steel, these float valves have excellent corrosion resistance even when exposed to chemicals.

Made of stainless steel, these float valves have excellent corrosion resistance even when exposed to chemicals.

Hang these switches in a sump pit to detect rising water levels.

Measure volume in gallons without calculations.

Fold these vertical rulers for convenient storage and transport.

Attach a plumb bob (sold separately) to the rope’s hook and lower it into your tank to take a measurement.

Also known as oil-gauging tapes, use these tape measures to check the level of oil and other fluids in deep, large containers such as tanks and vats.

Take precise depth measurements in small holes and slots.

These gauges come with a calibration certificate traceable to NIST that states they've passed a test for accuracy.

Measure depth in dusty or wet environments--these gauges are rated IP67 for protection from dust and temporary water submersion.

These gauges come with a calibration certificate traceable to NIST that states they've passed a test for accuracy.

Check measurements at a glance.

Keep an eye on leaks, overflow, and temperature changes near your equipment, even when you’re offsite.

The sturdy box-style housing has precision-machined leveling surfaces to ensure accuracy.

One of the horizontal vials is a pitch gauge that reads slope in 1/8" increments.

Glow-in-the-dark vials are easy to read in low light.

With a precision-machined leveling surface and highly sensitive vial, this level provides superior accuracy.

These levels come with a calibration certificate that's traceable to NIST and includes the test measurements that confirm accuracy.

A color LCD and highly accurate sensor allow you to level both horizontally and vertically at the same time. This level also displays a real-time vibration graph.

A color LCD and highly accurate sensor allow you to level both horizontally and vertically at the same time.

Stick these levels onto carts, mobile equipment, and other horizontal surfaces to make sure they're level before use. The adhesive backing forms a permanent hold with no drilling or fasteners required.

Mount these levels to a wall or other vertical surface and they will indicate when you're level on the horizontal plane.

Use this 90° level to position posts and corners.