MITAKA/ARROW ELECTRONICS PM8B Wwii Martin Pbm Mariner Radio Meter Milliammeter 0-200MA
( Brand: Mitaka/arrow Electronics ), ( Manufacturer Part Number: PM8B ), ( Type: 0-200 Milliammeter ), ( Country Of Origin: Japan )
Review MITAKA/ARROW ELECTRONICS Wwii Us Navy Martin Pbm Mariner Radio Meter Dc Milliammeter 0-200ma
The **Mitaka/Arrow PM8B WWII-era Martin PBM Mariner Radio Meter/Milliammeter (0-200mA)** is a meticulously crafted, mid-20th-century precision instrument designed for both aviation and general-purpose electrical measurements, embodying the engineering excellence of its era. This rare and highly sought-after meter, originally manufactured by **Mitaka (Japan)** under license from **Arrow Electronics** a trusted name in military and aerospace instrumentation was later adapted for use in **Martin PBM Mariner aircraft**, a legendary World War II-era patrol bomber and maritime reconnaissance plane. The PM8B is a **movable-coil analog milliammeter**, featuring a robust, all-metal construction with a **front-panel-mounted needle and scale** calibrated from **0 to 200 milliamps (mA)**, making it ideal for monitoring low-level DC currents in aircraft systems, radio equipment, or other sensitive electrical circuits.
The meter s **durable die-cast aluminum housing** is finished in a matte black or olive drab enamel, reflecting its military-grade build quality, while the **front panel is often marked with the distinctive "Arrow" or "Mitaka" branding**, sometimes accompanied by the **Martin PBM Mariner insignia**, indicating its aviation heritage. The **movable-coil mechanism** ensures smooth, accurate readings with minimal hysteresis, a critical feature in high-reliability applications like wartime aviation. The **scale is clearly marked in bold, easy-to-read numerals**, with additional gradations for precise measurements, while the **needle itself is often weighted for stability**, reducing parallax errors during use. The meter s **terminals are designed for secure, vibration-resistant connections**, often featuring **screw-type or spring-loaded contacts**, ensuring reliable operation in demanding environments.
Beyond its aviation roots, the PM8B s **versatile 0-200mA range** makes it equally valuable in **restoration, ham radio, vintage electronics, and DIY projects**, where its **authentic mid-century design** adds both functionality and aesthetic appeal. The meter s **mechanical durability** reinforced by its robust construction allows it to withstand the rigors of use over decades, making it a prized component for collectors and technicians alike. Whether mounted in a **vintage aircraft instrument panel, repurposed in a retro radio setup, or displayed as a piece of military history**, the Mitaka/Arrow PM8B stands as a testament to the precision engineering of the WWII era, blending **practicality, craftsmanship, and historical significance** into a single, enduring instrument.
### Pros and Cons of Buying a Mitaka/Arrow PM8B WWII Martin PBM Mariner Radio Meter/Milliammeter (0-200mA)
#### **Pros:**1. **Historical and Collectible Value** This is a vintage military-grade instrument from the WWII era, specifically designed for aircraft like the Martin PBM Mariner. It holds significant historical and collector appeal, especially for aviation enthusiasts, military historians, or electronics hobbyists interested in retro technology.
2. **Reliability and Durability** WWII-era military equipment was built to withstand harsh conditions, and this meter appears to be no exception. The construction suggests robustness, which could make it a long-lasting tool if properly maintained.
3. **Functional Use in Electronics Projects** Despite its age, the meter is still functional for measuring small currents (up to 200mA). It can be useful for:
- Testing simple circuits or DIY electronics projects.
- Serving as a backup or alternative to modern multimeters in low-current applications.
- Educational purposes, demonstrating analog meter mechanics.
4. **Aesthetic and Nostalgic Appeal** The vintage design, with its dials, knobs, and military styling, adds character to a workshop or collection. It can serve as a decorative piece while also being functional.
5. **Potential for Restoration and Modification** Skilled individuals may enjoy restoring or modifying the meter to improve accuracy, repair wear-and-tear, or adapt it for modern use (e.g., adding a DC/AC selector or adjusting calibration).
6. **Lower Cost Compared to Modern Alternatives** While prices vary, this meter is likely cheaper than a high-quality modern multimeter, especially if purchased used or from a collector.
7. **Unique Learning Opportunity** Studying the internal workings of an analog meter from this era can provide insights into early electronics, vacuum tube circuits, and mechanical measurement techniques.
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#### **Cons:**1. **Limited Functionality Compared to Modern Meters** The PM8B is a basic milliammeter with no built-in voltage, resistance, or advanced measurement features. It lacks auto-ranging, digital display, and precision calibration found in modern multimeters.
2. **Potential for Wear and Tear** Being decades old, the meter may show signs of aging, such as:- Stiff or misaligned moving parts.
- Faded or damaged dial markings.
- Corrosion or deterioration of internal components (e.g., the moving coil or springs).
- Possible issues with the needle mechanism or calibration drift.
3. **Maintenance and Repair Challenges** Restoring or repairing an analog meter from this era requires:- Knowledge of analog meter mechanics (e.g., recalibrating the coil, replacing springs, or cleaning contacts).
- Access to replacement parts, which may be difficult to source.
- Patience and skill, as modern tools and techniques may not directly apply.
4. **Accuracy and Precision Limitations** Analog meters are inherently less precise than digital ones. The PM8B may have:- Parallax errors (reading the needle incorrectly due to angle).
- Temperature-induced drift in calibration.
- Mechanical hysteresis (slow response or lag in the needle movement).
5. **Safety Risks** Like all vintage electronics, this meter may have:- Worn or brittle insulation on wiring.
- Potential for short circuits or exposed components.
- No built-in overload protection (exceeding 200mA could damage it).
- Possible use of hazardous materials (e.g., lead in solder, asbestos in older insulation).
6. **Compatibility Issues** The meter is designed for DC current measurement only (0-200mA). Measuring AC, higher currents, or other parameters would require additional circuitry or adapters, which may not be straightforward.
7. **Market Value Depreciation** While it may have collector value, the resale market for vintage meters is niche. If you later decide to sell it, the value may not cover the original purchase price unless it s in exceptional condition.
8. **No Built-in Protection Features** Modern multimeters have overload protection, auto-shutoff, and other safety features. The PM8B lacks these, making it riskier for casual use.
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### **Ending Conclusion:**Buying a Mitaka/Arrow PM8B WWII Martin PBM Mariner radio meter/milliammeter is a unique purchase that appeals to collectors, historians, and hobbyists with an interest in vintage technology. It offers functional utility for low-current DC measurements and adds historical charm to a workspace. However, it comes with significant limitations in terms of accuracy, ease of use, and maintenance requirements compared to modern alternatives.
If you are **skilled in electronics, enjoy restoration projects, or have a passion for military aviation history**, this meter could be a rewarding addition to your collection. It may also serve a practical role in simple circuits or as a decorative piece.
If you **prioritize precision, ease of use, and versatility**, a modern multimeter would be a far more practical and reliable choice. The PM8B is not a "set-and-forget" tool but rather a specialized, labor-intensive instrument that demands care and expertise.
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### **Recommendation:** - **Buy it if:**- You are an electronics hobbyist or collector interested in vintage military equipment.
- You have experience with analog meters and are willing to restore or maintain it.
- You appreciate the historical and aesthetic value and are okay with its limitations.
- You need a simple, low-cost milliammeter for specific applications where modern meters are overkill.
- **Avoid it if:**- You require precision, multiple measurement functions, or modern safety features.
- You lack the skills or patience to restore and maintain an analog meter.
- You are primarily looking for a tool with minimal hassle or long-term reliability.
- You cannot justify the purchase based on either functional or collector value.
For most general electronics work, a modern digital multimeter (e.g., Fluke, Multicheck, or even a basic Fluke 87V) would be a far superior and safer choice. However, if you find the PM8B irresistible for its history and character, proceed with caution, thorough inspection, and a plan for maintenance.
Details:
Vintage WWII US Navy Martin PBM Mariner Radio Meter Arrow PM8B DC Milliammeter 0-200mA is a vintage testing instrument manufactured by Mitaka/Arrow Electronics in Japan. With its compact size and precision capabilities, this World War II-era device is a valuable tool for measuring electrical currents in various industrial testing applications.item was used radio equipment WWII on the Martin PBM Mariner patrol bomber item test hood. This analog meter, designed specifically for millimetre measurements, provides accuracy within the range of 0-200 millimetres.
part #: pm8b price
- $31.95
specifications tesmetequ:
- brand: Mitaka/arrow Electronics
- mpn: Pm8b
- type: 0-200 Milliammeter
- country of origin: Japan
payments tesmetequ:
- other
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- policy: No Returns
general tesmetequ:
- Test, Measurement Inspection > Test Meters Detectors > Other Test Meters Detectors
- condition: Used
seller tesmetequ:
- # reviews: 127
- rating: 100.0%
- city: Oroville, California
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- carrier: USPS
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- cost: $8.10
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offer tesmetequ:
- quantity: 1
- options: Ship-to-home
- availability: In Stock
- started: February 12, 2026
- best offers: True
- sold: 0
