DS-3001 — IIITDM JABALPUR

CALIBR.

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One device. Every measurement. Zero compromise.

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25cmCompact Form
12-bitSensor Resolution
5+Tools in One
75%Users Want This
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CAPABILITIES

All-in-One.
Nothing Left Out.

Every tool an engineer needs, embedded in a 25cm form factor.

Linear Measurement

Real-time digital readout via magnetic encoder.

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Linear Measurement

A magnetic encoder reads distinct positions. Displays live on the OLED panel in mm or cm.

  • ± 0.1mm accuracy
  • Real-time OLED readout

Angular Measurement

Digital protractor via rotating arm.

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Angular Measurement

Angle is computed and displayed instantly — in degrees, radians, or gradians.

  • Full 360° rotation range
  • Multi-format output

Compass Function

Draw perfect arcs using the detachable arm.

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Compass Function

The detachable rotary arm doubles as a compass with a teeth-based locking mechanism that snaps radius in 1mm increments. Draw circles and arcs with one hand, precision guaranteed.

  • Locking compass teeth
  • Radius: 5mm – 150mm
  • No separate compass needed

Parallel Lines

Roller-wheel mechanism for perfect spacing.

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Parallel Line Drawing

Integrated roller wheels on the underside allow the ruler to glide smoothly across paper while maintaining a constant perpendicular offset. Draw uniformly spaced parallel lines effortlessly.

  • Micro-grip roller wheels
  • Spacing shown on display
  • No T-square required

Student Pricing

Engineered to be affordable — well under ₹4,000.

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Built for Students

Competitors like NeoRuler cost ₹10,500+. Calibr is designed ground-up with BOM optimization, targeting a sub-₹3,000 retail price — making smart drafting accessible to every engineering student in India.

  • Target price: < ₹3,000
  • NeoRuler costs 3.5× more
  • More features. Less money.
PROCESS

From Idea
to Instrument.

Phase 01

Research & Discovery

Conducted a 100+ person user survey. Mapped limitations of traditional rulers, protractors, and compasses. Analyzed patents US10955232B2 and WO2022059036A2 to identify existing gaps.

Survey · Patent Analysis · Literature Review
Phase 02

Architecture & Design

Defined the modular layered architecture. Created initial 3D CAD models in SolidWorks.

SolidWorks · CAD
Phase 03

Electronics Integration

Integrated the OLED display module, Bluetooth communication layer, and Li-ion battery.

OLED · BLE · Li-ion
Phase 04

Prototyping

3D-printed the initial housing with the compass locking teeth mechanism. Assembled slider track, LED array for partition marking, and roller-wheel parallel-line support.

3D Printing · FDM · Assembly
Phase 05

Final Fabrication

Sensor calibration, mode-switching logic, partition computation, and Bluetooth data export pipeline — all validated on the physical prototype.

C · Integration · Validation
PRODUCT GALLERY

Every Angle.
Accounted For.

Product

Product

The complete Calibr instrument — 25cm form factor, integrated electronics, and detachable rotary arm.

Linear Measurement

Linear Measurement

Live values displayed on the OLED panel.

Angular Measurement

Angular Measurement

Pivot-driven rotary arm reads angle in degrees, radians, or gradians.

Compass

Compass

Detachable arm with teeth-based locking. Draw arcs from 5mm to 150mm radius — no separate compass needed.

Parallel Line

Parallel Line

Roller-wheel mechanism on the underside maintains a constant offset. Draw uniformly spaced parallel lines effortlessly.

Digital Display

Digital Display

High-contrast OLED panel surfaces every reading in real time — length, angle, radius, and spacing.

App

App

Companion mobile app logs measurements, exports CAD-ready data, and pushes firmware updates over Bluetooth.

TARGET USERS

Built for the
People Who Build.

Engineering Students

Engineering Students

Drafting sessions, practical labs, design projects — Calibr replaces the full geometry set without adding bulk to your bag.

MechanicalCivilElectronicsArchitecture
Architects & Designers

Architects & Designers

On-site measurements, scale conversions, and blueprint annotations — Calibr's Bluetooth export syncs directly with design apps.

BlueprintsScale ModelsSite Work
Field Professionals

Field Professionals

Construction sites, workshops, inspection routines. Calibr's rugged compact form is built to survive the environment that demands precision most.

ConstructionInspectionWorkshop
THE TEAM

The Minds
Behind Calibr.

23BME072
Vikash
Mechanical Lead
23BSM014
Armaan Gupta
Electronics & Firmware
23BCS245
Taanvi Khevaria
Systems Design
23BCS291
Sowmya Sri Seelam
Research & Survey
23BCS285
Anuj Senthil
App Development
23BDS041
R Sabarish Raghav
Product Strategy
Project Advisor
Dr. Matadeen Bansal
PDPM IIITDM Jabalpur