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Weighing and measuring appliance, photo-optic mechanical apparatus assembly workers

How to become an Instrument Assembler

Also called: Thermometer assembler, Clinical thermometer assembler, Volume meter assembler, Length gauge assembler, Weights and measures assembler, Scale assembler, Flow meter assembler

Assembles instruments that show, indicate or record measurements such as length, mass, temperature, pressure, flow and volume.

Main tasks

Workers in this job say high school or university is common. From job tag's survey of people in each job, who could give several answers. It shows what workers see as common, not how many workers hold each level.

How to become one

No particular education or qualification is required to start. People usually join an instrument maker after finishing a technical high school or a mechanical or electrical senmon gakko (vocational college). There is also mid-career recruitment from other jobs. Most new school leavers find jobs through their school or Hello Work (public employment service). Mid-career hiring is done through Hello Work, newspapers and job advertisements. Straight after joining, you do simple unit assembly, and as you get used to the work and gain experience you move on to more complex units and then final assembly. After this assembly experience, in the next stage, adjustment and inspection, you compare assembled products against reference instruments to check they give the right readings and make fine adjustments where needed. This work is hard to do well without assembly experience. With experience, some people become shop-floor supervisors. Basic knowledge of machines and electricity helps you learn and improve. You handle tiny parts with tweezers and screwdrivers, so good hand skills and eyesight are needed. The concentration and patience to keep working seated in the same position for long periods are also important.

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Questions people ask

How do I become an Instrument Assembler?

No particular education or qualification is required to start. People usually join an instrument maker after finishing a technical high school or a mechanical or electrical senmon gakko (vocational college). There is also mid-career recruitment from other jobs. Most new school leavers find jobs through their school or Hello Work (public employment service). Mid-career hiring is done through Hello Work, newspapers and job advertisements. Straight after joining, you do simple unit assembly, and as you get used to the work and gain experience you move on to more complex units and then final assembly. After this assembly experience, in the next stage, adjustment and inspection, you compare assembled products against reference instruments to check they give the right readings and make fine adjustments where needed. This work is hard to do well without assembly experience. With experience, some people become shop-floor supervisors. Basic knowledge of machines and electricity helps you learn and improve. You handle tiny parts with tweezers and screwdrivers, so good hand skills and eyesight are needed. The concentration and patience to keep working seated in the same position for long periods are also important.

How much does an Instrument Assembler earn in Japan?

Average annual income in the private sector, bonus included, is ¥4,575,000 (Ministry of Health, Labour and Welfare). The figure is for the wage survey group Other machine assemblers, which covers several jobs.

Do you need a degree to become an Instrument Assembler?

Usually not. In this job's census occupation group, only 17% of workers are university graduates.

Will AI change the work of an Instrument Assembler?

Generative AI can do relatively little of this work, by the ILO's global estimate.

Sources

独立行政法人労働政策研究・研修機構（JILPT）作成 職業情報データベース 解説系ダウンロードデータ（IPD_DL_description_7_01.xlsx）ver.7.01 職業情報提供サイト（job tag）より2026年10月4日にダウンロード（https://shigoto.mhlw.go.jp/User/download）を加工して作成

独立行政法人労働政策研究・研修機構（JILPT）作成 職業情報データベース 簡易版数値系ダウンロードデータ（IPD_DL_numeric_7_00.xlsx）ver.7.00 職業情報提供サイト（job tag）より2026年10月4日にダウンロード（https://shigoto.mhlw.go.jp/User/download）を加工して作成

Sources: JILPT Occupational Information Database download data via job tag (解説系 ver.7.01 and 簡易版数値系 ver.7.00, downloaded 4 October 2026), processed by Peernovo; MHLW, Basic Survey on Wage Structure 2025; Statistics Bureau of Japan, 2020 Population Census; MEXT, School Basic Survey 2025; MHLW, Employment Referrals for General Workers (Hello Work statistics). Figures processed by Peernovo. English job names, translations and the matching of jobs to statistical groups, schools and degree fields by Peernovo.

Updated 4 October 2026