Vernier Caliper

LiveOctavian Fometescu11 apps · 1.2M installsEducationFree · contains adsIn-app purchases: $6.00 - $114.99 per itemcom.vernier.tavifom

Virtual metrology lab with calipers, micrometers and precision instruments.

Alert me★ WatchOpen in Play ↗
Total installs
745,775
exact · Play shows 500,000+
Installs / day
+926
7-day avg · last day +1.9K
Rating
4.5★
13.1K ratings · 32 reviews
Released
15 Aug 2018
8.2y ago
Last update
11 Sept 2026
v66.5.14 · 1mo ago
Countries
—
not checked yet

Installs per day

gain of the exact counter
05001,0001,5002,00012 Oct13 Oct

Lifetime avg ≈ 250/day (all installs ÷ days since release)

Daily tracking since 11 Oct 2026 · history grows every day

Install history

exact counter from Google Play
743.5K744.0K744.5K745.0K745.5K746.0K11 Oct12 Oct13 Oct
0200K400K600K800K15 Aug 201811 Oct 202613 Oct 2026

Dashed: estimate from the release date (no daily data before 11 Oct 2026) · time axis compressed before that day

Daily tracking since 11 Oct 2026 · history grows every day

Change timeline

Full history

No changes recorded yet. We compare every crawl with the previous one and list title, icon, screenshots, description, version, price and availability changes here.

Country availability

Availability has not been checked for this app yet. “Check all countries” looks the app up in about 140 Google Play storefronts and shows where it is live, listed but not installable, or missing — plus any country-specific (custom) store listings.

Top countries

Country data will be available soon.

We estimate where downloads come from using the app’s position in Google Play’s top charts in about 140 countries. This app is not in any chart we have collected yet; the estimate appears as soon as it is.

Top chart positions

Not in any tracked top chart.

App manifest

Read this app's manifest from Google Play: permissions, declared SDKs, components and AdMob app ID. Saved analysis appears here automatically.

Manifest analysis reads only the required APK ranges. Base APK downloads may need separate device splits to install.

Data safety

declared by the developer on Google Play
  • Shares data with third parties Device or other IDs
  • No data collected
  • Data is encrypted in transit

This is the developer's own declaration, summarised from the Play listing. The permissions below show what the app is technically able to access.

Permissions

5 in 1 group
0 Sensitive1 Notable4 Routine
OtherNotable5

Access to miscellaneous device features that don't fit other categories

  • Keep your phone's processor or screen from going to sleep, which can use more batteryprevent device from sleeping · WAKE_LOCK
  • Check whether you are online and whether you use Wi-Fi or mobile dataview network connections · ACCESS_NETWORK_STATE
  • Connect to the internet to load content and send datafull network access · INTERNET
  • Check with Google Play that you got this app legitimatelyGoogle Play license check · com.android.vending.CHECK_LICENSE
  • Receive push messages sent from the app's servers over the internetreceive data from Internet · com.google.android.c2dm.permission.RECEIVE

Sensitive = can reach personal data, location, camera/mic or act on your behalf. Notable = changes how your device behaves. Routine = normal for almost every app. Source: Google Play's permission list for all versions of this app.

Store listing

Full description
Precision Measurement Simulator is an interactive virtual metrology laboratory for learning how to read and use vernier calipers, micrometers, dial indicators, comparators, gauge blocks and angle-measurement instruments. Practice precision measurement with realistic virtual tools inspired by instruments used in mechanical engineering, machining, CNC training, manufacturing, dimensional inspection, quality control and technical education. Manipulate the instruments, read the scales, enter your answer and receive instant feedback. Precision measuring instruments included Vernier calipers • Metric vernier caliper with 1/10, 1/20 and 1/50 vernier scales: 0.1 mm, 0.05 mm and 0.02 mm resolution • Imperial vernier caliper with 1/128 inch scale • High-resolution 0.001 inch vernier caliper • Dial caliper with 0.02 mm resolution • Digital caliper with 0.001 mm resolution, mm/inch conversion, ZERO/tare and zero-error simulation Micrometers and comparative measurement • Metric outside micrometer, 0–25 mm range and 0.01 mm resolution • Imperial micrometer reading simulator • Digital micrometer with 0.001 mm resolution, movable spindle, mm/inch conversion, ZERO/tare and zero-error simulation • Passameter for comparing thicknesses, tubes and non-parallel surfaces • External dial measuring instrument with 100 examples for grooves, shaft diameters, wall thicknesses and other parts Dial indicators and comparators • Mechanical dial indicator with adjustable stand, gauge-block setup and part measurement • Digital comparator with movable probe, 0.01 mm resolution, mm/inch conversion, ZERO/tare and zero-error simulation Gauge blocks and angle measurement • Gauge block stack practice with standard 46-piece and 87-piece sets • Vernier bevel protractor for mechanical angle reading • Sine bar simulator with gauge blocks and interactive angle setup Engineering and mechanical simulations • Three-wire method for measuring the pitch diameter of external screw threads • Centrifugal tachometer with rotating masses, spring, levers, toothed sector, pinion and pointer • Bourdon tube pressure gauge showing tube deformation and mechanical motion transmission • Venturi tube simulator for fluid flow, velocity, pressure difference, Bernoulli equation and differential U-tube manometer readings Interactive learning features • Realistic scale reading and instrument movement • Metric and imperial measurement systems • Random exercises and immediate answer feedback • Guided explanations, visual indicators and optional spoken instructions • Zoom, pan and touch controls for detailed inspection • Portrait and landscape layouts for phones and tablets • Multiple visual themes and a multilingual interface • Clear representations of scales, graduations, verniers, dials and measuring surfaces Designed for • Mechanical engineering and manufacturing students • Vocational schools, technical colleges and metrology courses • CNC operators, machinists, apprentices and workshop beginners • Teachers demonstrating precision measurement principles • Quality inspection and dimensional measurement practice • Anyone learning precision instruments and engineering measurement Use the virtual laboratory to understand vernier scales, micrometer thimbles, dial readings, zero error, dimensional inspection, gauge-block combinations, thread measurement, angular measurement, pressure measurement, rotational speed and basic fluid mechanics. Learn how measuring tools work before using real workshop instruments. Practice repeatedly, explore different examples and improve your confidence when reading precision scales. This simulator is intended for education and training. It does not replace calibrated measuring instruments, professional inspection procedures or laboratory equipment.

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