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Choosing a Measuring Micrometer: Application Fit and Specification Checks

Storaen (Cangzhou) International Trading Co.JOURNAL / THE BUYER'S GUIDE / SELECTION

THE BUYER'S GUIDE / SELECTION

Choosing a Measuring Micrometer: Application Fit and Specification Checks

A buyer's guide to the Storaen granite measuring micrometer, a precision granite comparator stand. It covers where the product fits, which listed specifications to check (size, precision grade, base and arm dimensions, material properties), and which points need written confirmation from the supplier before you order.

AI-generated illustration; not a real product photograph, specification, operating permission or test certificate.

Application fit: comparator stand for high-precision measurement of parallel and planar components, not a handheld micrometer

Base size and footprint: listed from 100×150 mm to 600×400 mm, custom sizes via OEM/ODM

Bar height (250–300 mm) and arm length (140–180 mm) for part height and gauge reach

Precision grade 00 with listed precision of 0.002

Material properties: granite, density 2970–3070 kg/m³, linear expansion 4.61×10⁻⁶ per degree, non-rusting, non-magnetic, acid and alkali resistant

Commercial terms to confirm in writing: warranty (1 year listed), packaging, sea shipping via Tianjin, lead time, price

In this product listing, "measuring micrometer" means something specific. The Storaen Measuring Micrometer (model number 1002) is a precision granite comparator stand: a black granite base with a bar and arm that holds a micrometer, dial gauge or height gauge for comparison measurement. It is not a handheld screw micrometer. Check this first, because a buyer looking for a handheld caliper-style micrometer will need a different product.

This guide explains where the granite measuring micrometer fits, which listed specifications to compare, and which details to confirm in writing before you place an order.

1. Confirm the application fit

According to the product description, the granite/marble measuring micrometer is mainly used for high-precision measurement of parallel and planar components. The listed application is component inspection. It is a good candidate if your team:

inspects parallelism or flatness on parts using a dial gauge or micrometer head mounted on a stable stand;
needs a base that does not rust and is not magnetic, for example near magnetic fields or where corrosion of a steel base would be a problem;
wants a base that stays stable under load and has a uniform structural texture.

It is probably not the right choice if you need portable, handheld measurement of diameters or thicknesses, or if your parts are larger than the available base sizes listed below.

2. Compare the listed sizes and dimensions

The supplier lists these configurations (dimensions as published; precision 0.002, grade 00 for every size):

Size	Base length	Base width	Base height	Bar height	Arm length
100×150 mm	150	100	50	250	140
150×150 mm	150	150	50	250	140
200×150 mm	200	150	50	300	140
300×200 mm	300	200	50	300	180
400×300 mm	300	300	50	300	180
600×400 mm	400	300	50	300	180

When you choose a size, check three things:

Part footprint. The working surface has to hold the largest part you inspect, with room to spare.
Bar height and arm length. These limit how tall a part can be and how far the gauge can reach across it.
Table consistency. For the 400×300 mm and 600×400 mm entries, the listed base length and width do not match the size label. Ask the supplier to confirm the actual dimensions in a drawing before you order.

Custom sizes are listed as supported through OEM/ODM, so non-standard footprints can be discussed with the supplier.

3. Check precision and material properties

The published listing gives these figures:

Material: granite, black/natural color
Precision grade: 00, with a listed precision of 0.002 (the source says 0.002 mm accuracy)
Density: 2970–3070 kg/m³
Coefficient of linear expansion: 4.61×10⁻⁶ per degree
Stated material advantages: high accuracy, non-rusting, acid and alkali resistant, non-magnetic, does not deform, good wear resistance

The listing also gives a compressive strength value and a "less than 0.13%" figure, but the units and labels in the published table are unclear. If compressive strength or water absorption matters for your specification, ask for a material data sheet with correct units.

The listing makes some performance claims, such as flatness values for specific models and cycle-life comparisons with metal tools. Treat these as statements to verify. Ask for an inspection or calibration report for the exact unit you are buying, and do not rely on general marketing text.

4. Review commercial and logistics terms

The product listing includes:

Place of origin: Hebei; brand name: Storan; model number 1002
Warranty: 1 year (listed)
Packaging: plywood box or carton; single package size 40×30×30 cm; single gross weight 15 kg (the listing does not say which size this applies to)
Shipping: by sea, port of Tianjin
Selling unit: single item

Quick selection checklist

Is a comparator stand (not a handheld micrometer) what your inspection needs?
Does the base footprint fit your largest part?
Are the bar height and arm length enough for your part height and reach?
Is grade 00 / 0.002 precision sufficient for your tolerance?
Have you received drawings, inspection records and written commercial terms?

If all five answers are yes, the granite measuring micrometer is worth shortlisting.

THE PEOPLE

About the author

Richard Harrison

Richard Harrison is a seasoned Quality Control Engineer at Storaen (Cangzhou) International Trading Co., with over 15 years of experience in the industrial manufacturing sector. He specializes in ensuring the precision and reliability of cast iron welding platforms and gauging tools.

Read full biography

Richard is instrumental in implementing and overseeing stringent quality control protocols throughout the production process, from raw material sourcing to final product inspection. He’s deeply involved in the continuous improvement initiatives, focusing on reducing defects and enhancing product durability. He holds a Bachelor’s degree in Mechanical Engineering and is a certified Six Sigma Black Belt. Richard frequently contributes insights to industry publications regarding best practices in precision manufacturing.

THE COMPANY

Storaen (Cangzhou) International Trading Co.

Storaen (Cangzhou) International Trading Co.stands tall as a beacon of excellence in the manufacturing realm, nestled in the industrious city of Botou, China. Renowned for its mastery in crafting a versatile array of industrial products, this esteemed company has garnered a sterling reputation for its unwavering commitment to quality and precision engineering. At the core of Storaen (Cangzhou) International Trading Co.…

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