Mitutoyo Pro 360-950-317 Digital Protractor

Marque: Mitutoyo – Japanese manufacturer of precision measuring instruments

Type de produit: Pro 360 Série Digital Protractor Level

Modèle complet: 950-317 (Pro 360, without data output)

Numéro de commande: 950-317

Positionnement du produit: Precision digital measuring tool for angle measurement on vertical surfaces, combining functions of a protractor and a level.

Key Specifications

Fonctions principales & Caractéristiques

Measuring Principle

Uses an electronic gravity sensor with low-power circuitry to measure angles by detecting changes in gravitational direction, with no complex mechanical components.

Key Functions

1. Full-angle measurement: 360° measurement across 4 quadrants for tilt detection in any direction
2. Zero reset: Sets any angle as a reference zero for relative angle measurement
3. Hold function: Locks the current reading for easy recording and reading
4. Simple calibration: Calibrates using a known-angle surface without special fixtures
5. Auto-orienting display: LCD remains upright for clear reading at any angle (Pro 360 feature)
6. Low-power design: Up to ~500 hours of battery life for long-term field use

Avantages du produit & Applications

Core Strengths

High-precision measurement: Electronic sensor provides stable, reliable results superior to traditional bubble levels

2-in-1 functionality: Combines protractor and level for flatness, squareness, and angle measurement

Simple operation: Single-key operation, no professional skills required for on-site quick measurement

Robust construction: Aluminum housing is shock-resistant for industrial environments

High portability: Lightweight with a plastic protective case for easy transport and storage

Applications typiques

1. Machinery manufacturing: Machine leveling, workpiece angle inspection, equipment alignment
2. Automotive industry: Body assembly angle measurement, chassis adjustment, engine installation
3. Aerospace: Component angle inspection, aircraft structure leveling
4. Construction: Wall verticality inspection, floor flatness measurement, steel structure installation
5. Automation equipment: Robot arm angle calibration, conveyor leveling, fixture alignment
6. Quality control: Component angular tolerance inspection, finished product squareness verification

Related Models & Alternatives

Comparaison des modèles d'une même série

Cross-Brand Replacement Chart

Selection Advice & Remarques

1. Matching Functional Requirements

Basic angle measurement: 950-317 (Pro 360, no output) – cost-effective

High-precision measurement: 950-318 (Pro 3600, 0.01°) – for precision manufacturing

Data logging: 950-315 (Pro 360, RS232C) ou 950-318, supporting SPC

2. Précautions d'utilisation

Avoid strong magnetic fields, which may disturb the gravity sensor

Calibrate regularly (1–2 times per year) to ensure accuracy

Clean measuring surfaces before use to avoid dust-induced errors

Replace low batteries promptly to prevent data loss

3. Sélection d'accessoires

Protective case: Standard, for storage and protection

Battery: 6LR61 9V battery, 1–2 spares recommended

Calibration block: For on-site quick calibration

Data cable (output models only): 50AAA983A RS-232C cable for PC or data acquisition

Upgraded Models from Mitutoyo

950-318 Pro 3600: Upgraded model with 0.01° resolution, higher accuracy, and RS232C output for high-precision measurement and data recording

950-315 Pro 360: Same 0.1° resolution with RS232C output, ideal for data logging without ultra-high precision requirements

The Mitutoyo 950-317 Pro 360 Digital Protractor / Level is an ideal tool in industrial measurement due to its high accuracy, facilité d'utilisation, and reliability, widely used in all applications requiring angle and level measurement.

Operating Instructions for Mitutoyo Pro-360-950-317 Digital Protractor

Quick Start Guide

Basic operation: Press ON/OFF → wait 5 seconds for stabilization → place firmly on the surface → press ZERO to set zero → press MODE to change display mode.

Key functions: HOLD to lock reading, ALT to switch horizontal/vertical reference, no internal calibration (requires external reference surface).

1. Power On & Basic Measurement
2. Power on

Short press ON/OFF; the LCD lights up and enters 360° measuring mode (default horizontal reference: 0.0° horizontal, 90.0° vertical).

2. Stable reading

Place the reference base firmly against the measured surface and wait 5 seconds for the reading to stabilize.

3. Read the angle

360° mode: 0.0°–360.0°

180°×2 mode: press MODE; 0.0°–180.0° (dual direction)

90°×4 mode: press MODE; quadrant-based display

4. Power off

Hold ON/OFF for 3 seconds to shut down; auto power-off for energy saving.

2. Core Function Operations

3. Calibration Method (No Internal Calibration)

This model has no built-in self-calibration; use a known-angle standard surface (square, master protractor, precision V-block).

Steps:

1. Clean the standard surface and instrument base.
2. Place on the standard surface (par ex., 90°) and wait 5 secondes.
3. If the reading deviates, note the offset and correct manually or send for service.
4. Verify at 0°, 45°, and 90° for full-range accuracy.
5. Typical Application Procedures
6. Machine tool leveling

Power on → 90°×4 mode → place on guideways → read tilt → adjust feet to 0.0°±0.1°.

2. Workpiece squareness inspection

Power on → press ALT for vertical reference → measure side → read deviation.

3. Relative angle measurement

Power on → zero on reference → measure target surface → read relative angle.

4. Flatness inspection

360° mode → measure multiple points → record max/min difference.

5. Opération & Conseils d'entretien

Avant utilisation: Clean all contact surfaces; avoid strong magnetic fields.

Pendant l'utilisation: Handle gently; use fixtures for curved surfaces.

Entretien: Verify every 3 mois; store dry at -10°C~+40°C; remove battery during long storage.

6. Dépannage

7. Sécurité & Conformité

Do not disassemble the unit; this voids warranty and damages the sensor.

Do not use in flammable or explosive environments.

Complies with JJF 1084-2002 Calibration Specification for Levels for traceable results.