Best Inch Depth Gauges in 2026

Daisy
Last Updated: Jul 17, 2026

At a Glance: Our Top Picks for Inch Depth Gauges

6" / 150 MM DEPTH GAUGE METRIC & IMPERIAL STANDARDS - ENGINEERING
#TOP1
6" / 150 Mm Depth Gauge Metric &
9.3
PM SCORE
iGaging 0-4" Electronic Digital Depth Gauge SnapDepth 0.0005" Inch/Metric/Fractions Tire Tread Gage
#TOP2
Igaging 0-4" Electronic Digital Depth Gauge Snapdepth 0.0005"
9.3
PM SCORE
Anytime Tools 2" - 6" Electronic Digital Precision Engine Cylinder Hole Bore Gauge Resolution 0.00005"
#TOP3
Anytime Tools 2" - 6" Electronic Digital Precision
8.6
PM SCORE

* PickSmartly editors independently research, review, and endorse the top products through comprehensive data analysis. We may earn a commission for qualifying purchases made through our product links.

Summary of the Best Inch Depth Gauges of 2026

Market Overview
Inch Depth Gauges Reviewed
  • Reviews Analyzed: 872 Items
  • PM Avg. Rating: 5.4 / 10
16 Products Evaluated
  • Highest Price: $1,180.00
  • Lowest Price: $7.35
  • Avg. Price: $188.47

6" / 150 Mm Depth Gauge Metric & Imperial Standards - Engineering

AI
AAA-206
0.10 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
TAURISH 9.49

Features

6" / 150 MM DEPTH GAUGE METRIC & IMPERIAL STANDARDS - ENGINEERING

This steel depth gauge is used to quickly obtain measurements of holes or grooves by adjusting the rule to the desired depth

This depth gauge consists of a gun metal finished base and a steel rule

This gauge can be adjusted to the required measurement and then locked into position by a knurled nut

Head is cut out on one side, adjacent to the rule, permitting easier and more precise measurements

Igaging 0-4" Electronic Digital Depth Gauge Snapdepth 0.0005" Inch/Metric/Fractions Tire Tread Gage

IGAGING
35-0904
3.90 X 8.70 X 1.60 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Anytime Tools 9.88

Features

Includes 1" and 2" interchangeable depth bars to extend the rod to 2", 3" or 4".

3-Reading functions: inch, metric, & fractional

Spring loaded movement for easy use

Reading: 0.0005" / .01mm / 1/64

Use as an indicator or depth gage

#TOP3

Anytime Tools 2" - 6" Electronic Digital Precision Engine Cylinder Hole Bore Gauge Resolution 0.00005"

ANYTIME TOOLS
AT203171
2.50 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Anytime Tools 9.88

Features

Inch / Metric Range 2" to 6" diameter

Measures bore to 10" deep

Analog bar display with adjustable rang and tolerance indicators

Convenience to indicate measurements whether out of set tolerance or not

Resolution: 0.00005". Super large LCD screen

Cressi Digi2, Blue

CRESSI
KC800020
9.10 X 6.20 X 1.90 Inches
0.49 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Bay 15 9.95

Features

The Digi2 is the digital response to the scuba diving must-have pressure gauge and depth gauge. As a diver, you need an instrument for taking under control the depth and the residual air (or gas) in your tank. It is for your safety.

The Digi2 has been developed with the main concept to provide all the information in a compact device, showing the data in digital and large numbers. The information is easier to read than a traditional pressure gauge with needle and small numbers.

It features and a high-contrast display showing depth, tank pressure, residual dive-time, water temperature. It gives you also the maximum depth reached and how long are you diving.

The Digi2 has everything in one anti-scratch display, there are no buttons, no menu to navigate. Great to get all the data in one shot instead to read multiple gauges.

It is compact, lighter than the traditional analogic gauges, great for traveling (122 g | 4.3 oz). User-replaceable battery with a sealing sensor. If the battery cover is not screwed correctly the Digi2 will advise you (Cressi patent).

The Digi2 uses low energy, the battery could last 1,000 hours. The screen turns off while not used and turns off automatically when you remove the cover or when attached to the first stage HP port.

When the battery indicator starts to flash you can complete your dive safety, the residual life is around one week. It comes with a magnet cover, for storage but also for change from metric to the imperial system (Cressi patent).

The Digi2 is designed and manufactured in Italy by Cressi, an Italian brand pioneer in scuba diving, snorkeling and swimming equipment since 1946. The product is covered by a 2-year limited warranty.

The Digi2 is a digital gauge, it is not a dive computer. You can't plan or record your dives.

Fowler 54-225-555-0 Xtra-Value Electronic Depth Gage With 0-16"/406Mm Measuring Range

FOWLER
54-225-555-0
7.75 X 4.25 X 1.80 Inches
0.04 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

LCD Display: High-quality electronic depth gage features a large LCD screen which displays in inch/metric/fractions; the electronic display can be easily adjusted for zero setting; spring-loaded and hold measurement button for ease of use

Precision Measurements: Features a 0-16"/406mm range, a resolution of 0.0005"/0.01mm (fractions in 1/64" increments), and travel of 0-1"/25mm

Rod Extensions: Five rods with a diameter of 0.176" that can be connected to reach full capacity

Set Includes: A Fowler 54-225-555-0 depth gage, 5 measuring rods, and a hardened plastic case

Cnraqr Universal 52Mm Water Temperature Gauge With 1/8 Npt Sensor Car Digital Meter Red Display Temp 100-300F(-17~187C)

CNRAQR
WTM-Y-CB
2.05 X 0.00 X 0.00 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
RUIAN INTER-POWER INTERNATIONAL TRADING CO., LTD. 9.50

Features

【HIGH ACCURACY】Measurement range is 100-300F(-17~187C),Sensor mounting thread: NPT 1/ 8 ",Power: 12V DC, Max. 0.3A.

【SMARTER INTERFACE】The Digital Gauges include new technological features that make them easier to use. Two buttons on the faceplate deliver programmability for peak/recall, standard or metric center LED readout and sweeping LED needle, and user-selectable threshold warnings.

【EASIER TO MOUNT】Despite the larger display, Gauges are contained in a standard 2-1/16th-inch (52mm) diameter housing for mounting in a standard gauge pod. Thanks to an advanced single board design, X-Series Gauges have an incredibly slim overall depth of under 18.8mm This shallow cup depth allows Gauges to be mounted practically anywhere.

【EASIER TO READ】Visual improvements include a bright center LED display that is 87% larger than our original digital gauges and provides better readability. A sweeping red LED “needle” lines the edge of the gauge face for quick reference. A 33% overall increase in the gauge face display makes it easier to see at a glance.

【QUALITY SERVICE】We Value Your Shopping Experience And Strive To Offer A High-Quality Product And Service.When You Encounter Any Questions About The Product, You Can Contact Me As Soon As Possible, And I Will Answer It For You.

#TOP7

Accusize Industrial Tools 0-6'' Electronic Depth Micrometer With 4'' Base, P103-0178

ACCUSIZE INDUSTRIAL TOOLS
P103-0178
1.97 X 6.69 X 11.81 Inches
1.98 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Accusize Tools 9.83

Features

Range: 0-150 mm / 0-6'', Accuracy: ±0.003 mm, Base: 4”; No. of rods: 6

Interchangeable rods provide a wide measuring range

High accuracy interchangeable rods enable that reading does not have to be reset when changing rods

Resolution: 0.001 mm (metric); 0.0005''(Inch)

Use SR44 battery (not included)

Fowler 54-646-401-0, X-Tender-E Digital Dial Bore Gage Set With 1.4" - 6"/35Mm-150Mm Measuring Range

FOWLER
54-646-401-0
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

Accurate Measurements: The bore gage features an electronic indicator with resolution of 0.00005"/.001mm and measuring depth of 9 inches

Durable Construction: This electronic indicator provides both inch and metric readings; two-point contact system is used to detect geometry problems such as ovality and taper; carbide-tipped contact points provide extended wear and improved abrasion resistance

The easily adjustable bore gage is self-centering and includes a 2-inch contact extension holder

Minimum Hold Feature: This electric gage locks and holds the bore size as the gage is rocked within the part to be measured

Set Includes: A storage case, 2 batteries, 15 measuring anvils, 4 spacers and an instruction manual

Scubapro 3-Gauge Inline Diving Console With Pressure Gauge, Depth Gauge, And Fs-1.5 Compass, Metric Display, Metal

SCUBAPRO
SPRO-28.013.100
4.40 X 15.70 X 1.40 Inches
0.90 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
DiveCatalog 9.89

Features

Sleek, three-gauge inline console combines a pressure gauge, depth gauge, and FS-1.5 compass for easy at-a-glance diving data in a durable, compact plastic-case.

FS-1.5 dive compass features a unique tilt angle of up to 26 degrees for easy reading at almost any position and calibration for the northern hemisphere only.

Oil-filled analog depth gauge offers a linear Bourdon tube design for precise readings at all depths and 60-meter linear scale.

Pressure gauge in brass case with 0-400 bar metric pressure scales and red zone that clearly warns you when approaching extreme pressure situations.

Great for both recreational and technical diving, it's backed by a manufacturer's limited 1-year warranty.

Igaging Multi Gauge Snap Check Pro Height/Depth Gauge 0-2" Inch/Fractional/Metric

IGAGING
34-0907
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Anytime Tools 9.88

Features

Dual Dial Indicator Inch / Metric 3 scales Inch / Fractional Inch / mm

Fine Adjustment Knob for easy calibration

Range: 0-2" Resolution: 0.001"/0.01mm

Magnetic Base, Smooth Spring Plunger

Includes 3 anvils: Flat, Ball, Extended Tip

Cgoldenwall High Accuracy Digital Radius Gauge Electronic Inside And Outside Radius Gage With 10Mm /20Mm /30Mm /60Mm/100Mm Changeable Measuring Jaw Black 0.2" - 27.5"/5 Mm - 700 Mm

CGOLDENWALL
FF89
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Cgoldenwall Store 9.82

Features

Digital accuracy radius gauge: Can both measure Outer & Inner Radius of arcs & Depth and Step measurement. With Digital dial indicator function,Measuring Range: length displacement 0-13mm (0 ~ 0.5 inch); Resolution: 0.005mm (0.00005 inch); Radius Range: 5-700mm (0.2 ~ 27.5 inch)

Large High Definition Display: the readings are clear at a glance, shown Inner and outer diameter ,Measuring Jaws , Radius R value, Metric and Imperial Units ,length,Arc chord height . With data connection port can be connected to the computer to output data, more convenient and quick.

Inch/Metric Conversion: Switchable between mm and inch, Suitable for All Kinds of Measurement, with simple operation, fast reading, small size, convenient reading, hand-held Measurement characteristics.

Comes in nicely fitted case and 5 Interchangeable Measuring Jaws: 10mm/ 20mm/ 30mm/ 60mm/ 100mm. You can choose corresponding jaws according to your measuring needs.

Daily MEASURE helper:Work well on daily basis arc measurement, such as mechanical parts, wooden molds, construction steel molds, etc. ATTENTION: the battery is NOT included in the package due to air transport regulation.

Vdiagtool Coating Thickness Gauge For Car Vc200 Vc300, High Resolution 0.01Mil, Digital Car Paint Thickness Tester With Hd Backlight, 180°/360° Rotated Screen, Fe/Nfe Probe, Usb Rechagerable (Vc300)

VDIAGTOOL
VDT-VC200300-P
2.04 X 1.02 X 4.88 Inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
VDIAGTOOL Direct 7.52

Features

💥 【2023 NEWEST COATING THICKNESS GAUGE】 - You are getting a superior paint thickness gauge for cars! ✅ Built-in Battery; ✅ 180° Screen Rotation (VC200)/360° Screen Rotation(VC300); ✅ Voice Prompt; ✅ HD Color Screen; ✅ High Contrast Backlight LCD; ✅ Highly Sensitive Fe/NFe Probe; ✅ Single/Continuous Measurement; ✅ Self-calibration; ✅ Metric/Imperial Unit; ✅ Automatic Shut Down. 📣 Any questions, reach us via: 📥vdiagtool2 @ out look . c om📥

🚗【HIGH ACCURACY and HD COLOR SCREEN DISPLAY】- This car paint thickness tester has 2” color-screen HD display, the high contrast backlight can show the measurement data clearly even when you are in dark or in bright light outdoors. You can set the background color (Black, Blue, Orange) and brightness to get more comfortable readings.

🚙 【AUTOMATIC SUBSTRATE RECOGNITION and PROTECT YOUR PAINT】- This paint gauge thickness meter adopts the highly sensitive probe which can identify iron (ferrous) and aluminum (non-ferrous) substrates automatically. The coating thickness data will be measured accurately in seconds! With the dynamic design of the probe sensor, this paint depth gauge can measure on surfaces of any shapes - concave, rough and convex, the V-shaped coating probe will not scratch the paint when you do the test.

⚖【BASIC/ZERO-POINT and OFFSET CALIBRATION】- To get the results more accurately, please do the calibration for this paint meter thickness gauge for cars before measurement. Just press the calibration button and put the different standard foils in sequence, you can adjust the value by pressing the up/down button to make it is the same as the standard foils. Don't know how to do it? Please download the user manual from the product page or reach us via: 📨vdiagtool @ out look . c om📨

🆗【USB RECHARGEABLE & PORTABLE】- This automotive paint depth gauge can be charged up with a USB cable (included in the package). So you don’t have to rush out and buy batteries if the device runs out of power. Unlike other heavy devices, this paint thickness tester is so lightweight (ONLY 0.28lb), you can fit it in your pocket or in a small bag to bring it along. Any questions, kindly reach us via: 📨vdiagtool @ out look . c om📨

💥 【SUPER HANDY TOOL BEST FOR YOU】- Using this car paint meter is extremely easy. All you have to do is turn it on and simply press it against the paint and wait until the actual paint thickness is displayed, then move on to the next test point. Easily fit in one hand, so it is so convenient for you when take it on your pocket and do the testing everywhere! It is perfected used by person who want to buy the used car, car detailer, paint shop, used car dealer, DIYer, paint professional and ect.

#TOP13

Riverweld Fillet Weld Butt Weld Automatic Weld Size Welding Gauge Metric Stainless Steel Inspection Gauge

RIVERWELD
FILLET WELD BUTT WELD WELDING GAUGE
6.06 X 1.42 X 4.80 inches
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
RIVERWELDstore 9.78

Features

Fillet Weld Butt Weld Automatic Weld Size Welding Gauge Metric Stainless Steel Inspection Gauge

Metric

Stainless Steel

Scubapro 2-Gauge U-Line Diving Console With Pressure Gauge And Depth Gauge, Metric Display, Plastic

SCUBAPRO
05.012.210
0.75 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
DiveCatalog 9.89

Features

Sleek, two-gauge U-line console combines a pressure gauge (0-400 bar metric scale) with depth gauge in a durable plastic case for easy at-a-glance diving data.

Oil-filled analog depth gauge offers a linear Bourdon tube design for precise readings at all depths up to 60 meters.

Both gauges feature red zones that clearly warn you when approaching extreme depth or pressure situations.

C1 compass (sold separately) can be attached at the bottom of the console boot. Ideal for the traveling diver who uses a non-air-integrated computer.

Great for both recreational and technical diving, it's backed by a manufacturer's limited 1-year warranty.

Riverweld 7Piece Fillet Weld Set Gage Rl Gauge Depth Gauges Welding Inspection Test Ulnar Metric & Inch

RIVERWELD
RL GAUGE
6.89 X 1.89 X 3.50 Inches
0.33 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
RIVERWELDstore 9.78

Features

7piece Fillet Weld Set Gage

Rl Gauge

Both Metric & Inch

Stainless Steel

Mitutoyo 511-521 Absolute Digimatic Lcd Bore Gauge, 1.8-4"/45-100Mm Range, 0.00005"/0.001Mm Graduation, +/-0.00012"/0.003Mm Accuracy

MITUTOYO
511-521
1.10 Pounds
SELLER SELLER SCORE AMAZON FULFILLED PRIME FREE SHIPPING
Amazon.com 9.68

Features

1.8 to 4” range, 6” probe depth, 0.00005”/0.001 mm resolution, with + or - 0.00012” accuracy

LCD display for easy measurement reading

Conforms to IP 53 for dust and water protection

Functions for origin-set, zero-set, power on/off, inch/metric conversion, SPC data output, Go/No Go judgment, and alarms for low battery, scale contamination, overflow error, and tolerance limit setting error

Compatible with extension rods for deep hole measurement (sold separately)

Top 10 depth gauges Brands on Amazon

Here is the list of top-rated brands that were evaluated by PM.

Brand Count
Fowler 2
Igaging 2
Riverweld 2
Scubapro 2
Accusize Industrial Tools 1
Ai 1
Anytime Tools 1
Cgoldenwall 1
Cnraqr 1
Cressi 1

Top 10 depth gauges Brands Pie Chart


We've carried out a comprehensive analysis of 872 reviews on depth gauges, using our selection criteria to identify the best options in the test, measure & inspect. Our findings reveal that most customers typically select depth gauges priced around $188.47, with top brands including ai, igaging, gemred, newkita, anytime tools, molain, preciva, mitutoyo and fowler and godeson

Our team of expert editors reviewed these high-quality items and handpicked the top 16 depth gauges for your consideration. We've also done extensive research on numerous sellers, identifying the best ones in the test, measure & inspect category. These include taurish, anytime tools, gemred, smells, molain store, hongsw, amazon.com, smartiredirect and rumexeng and jerayus .

We are dedicated to assisting our users in finding the right gauges Products based on their needs, saving them considerable time when choosing which depth gauges to buy. We take pride in the number of satisfied users we've helped through our thorough and insightful reviews.