Precision Measuring Instruments
for UAE Machine Shops
Calipers, micrometers, dial indicators, bore gauges, height gauges and inspection gauges — over 130 instruments held in stock across Dubai, Sharjah and Ajman. Metric and imperial, workshop-grade through to toolroom metrology.
Measuring Instruments & Gauges in Dubai, Sharjah & Ajman
Measurement is where a job is won or lost. A part that machines beautifully but measures out of tolerance is scrap, and an instrument that reads 0.02 mm out is worse than no instrument at all — because you trust it. SAN Tools has supplied precision measuring equipment to UAE machine shops, fabricators, toolrooms and QC departments since 1987, and we stock to that standard: genuine Mitutoyo and Insize instruments with traceable accuracy specifications, alongside a practical own-brand range for the shop-floor tools that get dropped, borrowed and worn out.
The range below covers dimensional measurement end to end — external, internal, depth, height, angle, thickness, surface and weld inspection. Everything listed is held in the UAE, not indented from overseas, so a caliper you order in the morning is normally on its way the same day.
Our Measuring Instrument Range
Calipers
Digital, dial and plain vernier calipers from 0–150 mm up to 0–2000 mm. Mitutoyo Absolute Digimatic (500 series) and high-accuracy vernier (530 series); Insize 1108 digital, 1312 dial and 1205 plain vernier. Inside, outside, depth and step measurement from one instrument.
Mitutoyo 500 / 530 series · Insize 1108, 1205, 1312 · SAN Tools 0–1000 mm and 0–2000 mm digital
Micrometers
Outside micrometers in 25 mm steps from 0–25 mm to 475–500 mm, electronic and mechanical. Mitutoyo 103 series and 293 Digimatic; Insize 3203 mechanical and 3109 electronic sets; tubular inside micrometers for large bores.
Mitutoyo 103-137 / 103-138 / 103-139-10 / 103-140-10 · 293-821-30 · Insize 3203, 3109, 3222
Dial & Test Indicators
Plunger dial indicators, one-revolution, double-face and compact types, plus lever-type dial test indicators for machine setup and runout. Digital indicators where you need output or a fast zero.
Mitutoyo 2046A, 513-404-10A · Insize 2301, 2302, 2304, 2308, 2309, 2313, 2380 · digital 2103 / 2104
Height & Depth Gauges
Vernier height gauges and height scribers for marking out and surface-plate work; vernier and digital depth gauges, including knife-edge base types for narrow slots.
Insize 1253 vernier height gauge · 6990-300A scriber · 1240, 1141, 2143 depth gauges
Bore & Small-Hole Gauges
Dial bore gauges for cylinder and bore inspection, small-hole bore gauges, telescoping gauges and split-ball small hole gauges for bores below the reach of a caliper.
Mitutoyo 511-201 · Insize 2322, 2852 bore gauges · 4206 telescoping · 4208 small hole
Thickness & Feeler Gauges
Dial and digital thickness gauges for sheet, film and material checks, plus feeler gauge sets in 23- and 32-blade configurations, long blades and single blades for machine setting.
Insize 2364, 2862, 2710, 2871 · 4602 / 4605 feeler sets · Jetech and ISZ sets · single blades
Thread, Radius & Angle Gauges
Screw pitch gauges (metric, Whitworth and universal), thread angle fish-tail gauges, radius gauge sets, chamfer gauges, taper gauges and bevel and digital protractors.
Insize 4810, 4812, 4820 · 4801 / 4802 radius · 4844 chamfer · 4833 / 4837 taper · 2171, 2176, 2372, 4799 protractors
Squares, Levels & Straight Edges
Machinist squares, beveled-edge squares, 45° squares, combination square sets, precision spirit and box levels, and ground straight edges for flatness and alignment checks.
Insize 4707, 4745, 4747, 4790, 2274 · 2170 / 4903 levels · 4700 straight edge · magnetic V-blocks
Weld & Coating Inspection
Fillet weld gauges, bridge cam gauges, welding gauge sets, wet-film and coating thickness gauges, and sheet-metal and wire gauges for fabrication QC.
Insize 4830, 4832, 4835, 4839 · 4845 wet film · 4809 sheet metal · coating thickness gauges
Machine Setting & Stands
Magnetic indicator stands from 60 kgf to 80 kgf, universal and centering indicator holders, mechanical and electronic edge finders, and dial tool zero setters.
Mitutoyo 7010S-10 · Insize 6201-60, 6208-80A · 6291 / 6297 holders · 6562 / 6566 edge finders · 2397-502A
Inspection & Layout
Plug and ring gauges for go/no-go thread and bore checks, inside and outside spring calipers, dividers and spring dividers, steel rules and measuring tapes.
Insize 4124 plug gauges · 7240 / 7241 / 7261 / 7262 calipers · 7247 / 7260 dividers · 7110 rules · 7149 tapes
Specialist Instruments
Surface roughness comparison specimen sets, contact and non-contact tachometers, laser distance meters and refractometers for coolant concentration checks.
Insize ISR-CS130-W · 9225-405 tachometer · 9561-50B laser meter · ISQ-RM30 refractometer
Accuracy, Resolution and Repeatability — What the Numbers Actually Mean
Instrument specifications are quoted three different ways, and confusing them is the most common reason a workshop buys the wrong gauge. Resolution is the smallest increment the instrument can display — a 0.01 mm caliper shows hundredths. Accuracy is how far the reading may sit from the true value, quoted as a tolerance such as ±0.03 mm. Repeatability is whether you get the same number twice on the same feature.
A digital caliper reading to 0.01 mm does not measure to 0.01 mm — its accuracy is typically ±0.02 to ±0.03 mm over 150 mm. If your drawing tolerance is ±0.05 mm you are fine. If it is ±0.01 mm you need a micrometer, which achieves roughly ±0.002 mm over a 25 mm span. The working rule most quality systems apply is the 10:1 ratio: the instrument should resolve to about one tenth of the tolerance you are checking. For a ±0.05 mm feature, a 0.01 mm caliper is right. For ±0.01 mm, you want an instrument resolving to 0.001 mm.
Standards worth knowing
Micrometers are manufactured to DIN 863, calipers to DIN 862 and ISO 3611 governs micrometer design. Mitutoyo and Insize both publish accuracy figures against these standards, which is what makes them defensible in an audit. If you are supplying into oil and gas, aerospace or medical work, raise calibration documentation when you order — it has to be arranged with the instrument, not after it.
Which Instrument for Which Job
| What you are measuring | Instrument | Typical resolution |
|---|---|---|
| General part dimensions, ±0.05 mm or looser | Digital or dial caliper | 0.01 mm |
| Shaft or spindle diameter, ±0.01 mm | Outside micrometer | 0.001–0.01 mm |
| Bore diameter and taper | Dial bore gauge | 0.001–0.01 mm |
| Bore under 18 mm | Small hole or telescoping gauge + micrometer | 0.01 mm |
| Machine runout and setup | Dial test indicator + magnetic stand | 0.01 mm |
| Marking out on a surface plate | Vernier height gauge / scriber | 0.02 mm |
| Slot or hole depth | Depth gauge, knife-edge base for narrow slots | 0.01 mm |
| Thread identification | Screw pitch gauge, then plug or ring gauge to verify | go / no-go |
| Weld leg length and profile | Fillet weld gauge or bridge cam gauge | 0.5 mm |
| Paint or plating thickness | Coating thickness gauge (dry) / wet film comb (wet) | 1 µm / 5 µm |
| Squareness and flatness | Machinist square, straight edge, precision level | — |
| Machine table zero on CNC | Edge finder or dial tool zero setter | 0.01 mm |
Mitutoyo, Insize or SAN Tools — Choosing a Brand
Mitutoyo is the reference standard. Japanese-made, with the accuracy specification you want behind a first-article inspection or a customer audit. Our Mitutoyo range covers the Absolute Digimatic calipers, 103-series outside micrometers, the 513-404-10A dial test indicator and the 7010S-10 magnetic stand — the instruments that live on a QC bench rather than in a toolbox.
Insize gives you genuine specification compliance at a working price, which is why it makes up the largest part of this collection. For a shop kitting out several machines, or replacing instruments that walk off, Insize is usually the sensible call: DIN 863 micrometers, dial and digital indicators, and a very deep gauge range — feeler, radius, thread, weld, taper and chamfer — that is difficult to source elsewhere in the UAE.
SAN Tools own-brand covers the consumable end: feeler gauge sets, spring calipers, dividers, squares, magnetic bases and general-purpose micrometers. These are the instruments that get shared, dropped and lost, and paying Japanese prices for them makes no sense.
Not Sure Which Gauge You Need?
Tell us the feature, the tolerance and the material, and we will tell you the right instrument and the right resolution — not the most expensive one. Same-day quotes on stocked items.
Request a Quote Call +971 52 132 7742Why Buy Measuring Instruments from SAN Tools?
Genuine product
Authorised Mitutoyo and Insize supply, through the official channel with original packaging and documentation.
Actually in stock
130+ instruments held across Dubai, Sharjah and Ajman. Same-day dispatch on stocked lines rather than a six-week indent.
Applications advice
Since 1987 in UAE machine shops. We will talk you out of an instrument you do not need as readily as into one you do.
Calibration support
Working to an audited quality system? Tell us at enquiry stage and we will confirm what calibration documentation we can supply with that instrument.
Frequently Asked Questions
Can calibration documentation be supplied?
Tell us at enquiry stage if your quality system requires it. Certificates are raised against the specific instrument being supplied, so it has to be arranged with the order rather than added afterwards — let us know the requirement and we will confirm what is available for that instrument.
Are your Mitutoyo instruments genuine?
Yes. SAN Tools is an authorised distributor and Mitutoyo instruments are supplied through the official channel with their original packaging and documentation.
What is the difference between a caliper and a micrometer?
A caliper is versatile — outside, inside, depth and step measurement in one tool — with accuracy around ±0.02 to ±0.03 mm. A micrometer does one thing, over a 25 mm span, to roughly ±0.002 mm. Use a caliper for general work and a micrometer whenever the tolerance is tighter than about ±0.02 mm.
Which gauge do I need for a bore under 18 mm?
A dial bore gauge will not reach. Use a small hole gauge (split-ball type) or a telescoping gauge to transfer the dimension, then measure the gauge across a micrometer. Insize 4208 and 4206 series cover this range, and the Mitutoyo 511-201 small-hole bore gauge handles 10–18.5 mm directly.
Do you stock imperial as well as metric?
Yes. Most caliper, micrometer and indicator lines are stocked in both, and many digital instruments switch between the two. Tell us which you need when you order — the model numbers differ.
Can you deliver outside Dubai?
Yes, UAE-wide. We have branches in Dubai, Sharjah and Ajman, and deliver to Abu Dhabi, Al Ain, Ras Al Khaimah, Fujairah and Umm Al Quwain. Same-day dispatch on stocked items ordered before cut-off.
