Digital protractor 200mm with 360° LCD display – Bigstreen
Are you looking for a top-notch tool that will bring perfect precision to your workshop? The Bigstreen 200mm Digital Protractor with 360° LCD Display is an indispensable tool for every carpenter, builder, installer and DIYer. This innovative device combines the functions of a digital protractor and a classic ruler, allowing you to measure and transfer angles extremely quickly, easily and accurately.
Forget about guessing and time-consuming angle calculations with ordinary rulers. With the Bigstreen electronic protractor, you will complete every project without errors, whether it is laying flooring, making furniture, installing drywall systems or renovating an attic. With its robust stainless steel design and advanced digital functions, this measuring instrument is an indispensable part of every professional and home workshop.

Why choose a Bigstreen electronic protractor?
Measuring angles is crucial for the final appearance and stability of a structure in many projects. The Bigstreen 200mm Digital Protractor gives you complete control over every degree angle. With a measuring range of 0 to 360° and an exceptional accuracy of ±0.3°, you will be able to handle even the most demanding challenges.
The main advantage of the device is its dual functionality. It works as a precise digital angle gauge, while also offering laser-engraved metric and inch scales on 200 mm long arms. This means that the device can also be used as a standard ruler for marking and measuring lengths.

Key features and benefits

Angle measurement 0–360°: Provides a full range of measurement for all types of carpentry, construction and assembly work.
High accuracy ±0.3°: Provides complete control when cutting at an angle, assembling furniture and positioning elements.
0.05° resolution: Provides extremely accurate readings that detect even the smallest deviations in angles.
Clear LCD display: Quickly and easily read results without effort and without having to guess at the tiny lines on the scale.
ZERO function: Allows you to set the reference point (zero) at any position, ideal for measuring relative angles.
HOLD function: Freezes the current result on the display, allowing you to easily read the data even after moving the device from the measurement site.
REV (Display Rotation) function: Allows you to reverse the reading direction on the display, which is extremely convenient when working in difficult-to-reach positions or when measuring from the other side.
Dual scale (metric and inch): Laser engraved markings in millimeters and inches allow for versatile use in a variety of projects.
Robust construction: The main material of the housing is high-quality stainless steel, complemented by durable ABS and nylon materials, ensuring a long service life.
Ready to use immediately: You receive 2 CR2032 batteries in the package, so you can start using the device immediately after opening the packaging.
Energy saving: The auto-off function after a certain period of inactivity extends battery life.


Versatile use in practice
The Bigstreen digital protractor is designed for a wide range of tasks. Its use is extremely popular in the following areas:

Carpentry and joinery: Precise adjustment of angles on table saws, mitre saws and checking joint angles in furniture manufacturing.
Construction and installation: Measuring slopes, aligning drywall profiles, installing windows and doors, and laying ceramic tiles or laminate.
Metalworking and locksmithing: Checking welding angles and bending of pipes or profiles.
Home Projects (DIY): An indispensable tool for anyone who likes to do their own home improvement and wants professional results without the expensive services of a craftsman.


Technical specifications

Product name: Bigstreen electronic protractor
Angle measurement range: 0–360°
Resolution: 0.05°
Accuracy: ±0.3°
Arm length: 200 mm (each arm separately)
Overall dimensions: 215 x 35 x 25 mm
Display: Digital LCD
Measuring scale: Laser engraved (metric and inch)
Power supply: 1 x CR2032 3V lithium battery
Batteries included: 2 pieces (one for immediate use, one spare)
Rated power: 0.6 W
Operating temperature: 0–50°C
Operating humidity: ≥85% relative humidity
Predominant material: Stainless steel
Other materials: ABS, nylon
Product weight: 0.164 kg


Frequently Asked Questions (FAQ)
1. How does the ZERO function work on this digital protractor?
The ZERO function allows you to set any angle as the starting point (0.00°). This is extremely useful when you want to measure the difference between two angles (relative angle) or when you want to transfer a specific angle to another workpiece without complex calculations.
2. Is the measuring scale on the arms wear-resistant?
Yes, the scale on the protractor arms is laser engraved directly into the stainless steel. This ensures that the millimeter and inch markings will not wear or fade, even after years of intensive use in demanding workshop conditions.
3. What kind of battery does the device use and is it included?
The digital protractor operates on one 3V lithium battery type CR2032. The package includes 2 CR2032 batteries, which means that in addition to the first battery, you have an additional spare battery available for immediate use.


Responsible persons:
BIGSTREN - ISO TRADE Spółka z oo, Hangarowa 15, 59-220 Legnica, POLAND, +48 666002003, b2b@maxy.eu
Distributor for Slovenia: Haloorodje.si, Online Sales, Rok Groznik sp, Podturn 42, 8350 Dolenjske Toplice, info@haloorodje.si, +38669731944, Slovenia
Product origin: China

Instructions for using the product:
• Inserting the battery: Open the battery compartment cover on the protractor housing and insert the appropriate battery (e.g. CR2032) observing the correct polarity (+/-), then close the cover.
• ON/OFF & ZERO: Press the ON/OFF button to turn on the device. Before starting the measurement, place the protractor arms in a straight line (0 degrees) and, if necessary, press the ZERO (or ABS) button to reset the display to zero.
• Measuring internal and external angles: Open the movable arms of the protractor and place them against the edges of the workpiece or wall whose angle you want to measure.
• LCD display readout: Instantly read the exact measured angle value from 0° to 360° on the clear LCD display.
• Locking function (LOCK): When the desired angle is reached (e.g. for transferring to wood or a saw blade), tighten the locking screw to mechanically lock the position of the arms and prevent movement.

Useful tips:
• High accuracy 360° measurement: The digital protractor enables quick and reliable measurement of the entire range of up to 360 degrees, which is indispensable when making irregular angles and custom furniture.
• 200 mm arm length: Two 20 cm long straight arms serve as reliable rulers for easier application to larger surfaces and precise drawing of cutting lines.
• Convenient locking function: The mechanical locking screw allows you to reliably transfer the angle from the measuring point directly to the table saw, miter saw or workpiece without fear of it moving.
• Clear LCD display: The digital display eliminates reading errors from classic vernier calipers and provides fast and clear results.
• Compact and lightweight design: Lightweight yet durable material allows for easy carrying in a tool bag or storage in a work space.

Warnings:
- Use the product for its intended purpose.
- Do not use the device in a humid environment or in the rain.
- Protect the protractor from falls and strong impacts.
- Do not use force when extending the arms – this may damage the mechanism.
- Store the product in a dry place, away from heat sources.
- Do not disassemble the device as this may damage it.
- Keep out of reach of children.
- Clean with a soft, dry cloth. Do not use aggressive cleaning agents.

It is important to know

Before purchasing a digital protractor with an LCD display and a 200 mm long measuring scale, it is crucial to understand how its shape and length affect its practical use for various tasks. The most important factor is the compatibility of the scale length and the type of protractor with the tasks you most often perform - a protractor that is too short or too long can reduce efficiency. Also pay attention to the clarity of the scales and the ease of reading the data while working.

• The 200 mm measuring scale is great for most home and everyday projects, but limits its effectiveness on extremely large structures or long elements.
• The digital display on the LCD can significantly facilitate the accuracy of the reading, but it is recommended to check whether the display is sufficiently clear in the actual room lighting.
• The 360° protractor allows you to measure and mark any angle, but its greater versatility also means it is a little slower to use when serially marking only right (90°) angles.

Source of editorial recommendations: general verifiable guidelines for product selection.

In practice

🟢 Marking and checking angles in basic assembly work

The model with a digital display and 200 mm scale allows for easy measurement and marking of most typical angles when assembling shelves, frames or other home projects.

🟢 Transfer and measure non-standard angles for more complex projects

A 360° protractor is very useful when a project requires transferring less common or unusual angles from a design to a workpiece.

🟡 Fine measuring tasks on very small pieces

For working on really tiny elements, an even shorter scale would be a bit more maneuverable, but 200 mm is still accurate enough for most tasks.

🟡 Use on larger structures or long pieces

A scale of up to 200 mm may limit comfort when marking on larger boards or in structures where longer straight lines are required - in these cases a longer scale would be more practical.

Answers to frequently asked questions

Is the LCD screen easy to see in different lighting conditions?

The LCD display is usually clearly readable in standard indoor environments, but additional checking is recommended in very bright sunlight or poor lighting.

Is this length of scale suitable for typical household chores?

The 200 mm long measuring scale is universal enough for most basic DIY, carpentry and assembly tasks in the household.

What should I check before first use?

It is practical to check during the first test whether the measurements are accurate for your needs and whether the functions on the LCD screen are understandable without additional learning.

Description updated: September 2026

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