Major Group 38: Measuring, Analyzing, and Controlling Instruments; Photographic, Medical and Optical Goods; Watches and Clocks (OSHA SIC Manual)
Reference listings for legacy four-digit industries classified under Major Group 38: Measuring, Analyzing, and Controlling Instruments; Photographic, Medical and Optical Goods; Watches and Clocks (Division D: Manufacturing) in the official public-domain OSHA SIC Manual. Select a code below for modern NAICS equivalents.
Legacy Industries under Major Group 38
| Code | Industry Title | Division |
|---|---|---|
| 3812 | Search, Detection, Navigation, Guidance, Aeronautical, and Nautical Systems and Instruments | Division D: Manufacturing |
| 3821 | Laboratory Apparatus and Furniture | Division D: Manufacturing |
| 3822 | Automatic Controls for Regulating Residential and Commercial Environments and Appliances | Division D: Manufacturing |
| 3823 | Industrial Instruments for Measurement, Display, and Control of Process Variables; and Related Products | Division D: Manufacturing |
| 3824 | Totalizing Fluid Meters and Counting Devices | Division D: Manufacturing |
| 3825 | Instruments for Measuring and Testing of Electricity and Electrical Signals | Division D: Manufacturing |
| 3826 | Laboratory Analytical Instruments | Division D: Manufacturing |
| 3827 | Optical Instruments and Lenses | Division D: Manufacturing |
| 3829 | Measuring and Controlling Devices, NEC | Division D: Manufacturing |
| 3841 | Surgical and Medical Instruments and Apparatus | Division D: Manufacturing |
💡 Sector Guidance
OSHA safety rules: Workplace safety inspections and recordkeeping log exemptions are often target-filtered using legacy Major Group 38 (Major Group 38: Measuring, Analyzing, and Controlling Instruments; Photographic, Medical and Optical Goods; Watches and Clocks) classifications. If your facility performs mixed activities, identify the primary group representing the largest labor share to determine log requirements.
Legacy Industries in this Major Group (17)
Frequently Asked Questions
What is the OSHA SIC Manual for Major Group 38? ▾
SIC Major Group 38 represents 'Major Group 38: Measuring, Analyzing, and Controlling Instruments; Photographic, Medical and Optical Goods; Watches and Clocks' under the official public-domain OSHA SIC Manual (1987 Standard Industrial Classification). It classifies business activities based on product outputs.
How many legacy industries belong to Major Group 38? ▾
There are 17 individual 4-digit SIC industries listed under Major Group 38 in our directory, matching the final 1987 OSHA SIC manual.
Is SIC still used by OSHA and regulatory agencies? ▾
Yes. OSHA safety recordkeeping regulations (29 CFR Part 1904) reference legacy SIC Major Group 38 codes to determine workplace safety log exemptions. Credit agencies (Dun & Bradstreet) and SEC EDGAR public filings also maintain active SIC records.
What is the modern 2022 NAICS equivalent for Major Group 38? ▾
The legacy classifications under Major Group 38 map to various modern 2022 NAICS industries. You can check individual four-digit code pages for exact concordance links.
What is the difference between Major Group 38 and a NAICS sector? ▾
Major Group 38 is a legacy 2-digit SIC category grouping by product output (what businesses sell), whereas modern NAICS sectors group establishments based on production processes (how businesses work).
Does the SEC EDGAR search support filtering by Major Group 38? ▾
Yes, financial researchers can query the SEC EDGAR database using the Major Group 38 classification to locate all reporting public companies operating in this economic segment.
Are the classifications in Major Group 38 uniform nationwide? ▾
Yes, Major Group 38 is part of the 1987 federal SIC standard and remains uniform nationwide for administrative and historical consistency.
How do I select the primary SIC code under Major Group 38? ▾
When classifying an establishment under Major Group 38 (Major Group 38: Measuring, Analyzing, and Controlling Instruments; Photographic, Medical and Optical Goods; Watches and Clocks), identify the 4-digit industry representing the largest share of operating labor hours or gross revenue for OSHA and SEC EDGAR filing compliance.
Sources & References
- U.S. Occupational Safety and Health Administration (OSHA): Standard Industrial Classification (SIC) Manual
- U.S. Census Bureau: North American Industry Classification System (NAICS) Manual
- U.S. Securities and Exchange Commission (SEC): SEC EDGAR Filer Standard Industrial Classification Codes
- U.S. Small Business Administration (SBA): Table of Small Business Size Standards
- Electronic Code of Federal Regulations (eCFR): 13 CFR Part 121 - Small Business Size Regulations
- U.S. General Services Administration (GSA): System for Award Management (SAM.gov) Unique Entity ID Guide
- Defense Logistics Agency: Defense Logistics Agency (DLA) CAGE Search and Registration
- United Nations Statistics Division: International Standard Industrial Classification of All Economic Activities (ISIC)
- Internal Revenue Service (IRS): Instructions for Schedule C (Form 1040) Principal Business Activity (PBA) Codes
- Acquisition.gov: Federal Acquisition Regulation (FAR) Part 19 - Small Business Programs