सीमा गेज के संबंध में निम्नलिखित कथनों पर विचार करें:

1. प्लग गेज का उपयोग छिद्र के आकार की जांच के लिए किया जाता है।

2. रिंग गेज का उपयोग शाफ्ट के बाहरी व्यास के मापन के लिए किया जाता है।

3. रिंग और प्लग गेज दोनों दो डिज़ाइनों में उपलब्ध हैं, 'GO' और 'NO-GO'

दिए गए कथनों में से कौन सा सही है?

Explanation:-

Plain gauges -

• Plain gauges are used for checking plain (unthreaded) holes and shafts.
• Gauges are inspection tools without a scale that serve to check the dimensions of the manufactured parts.
• Instead of measuring actual dimensions, the conformance of the product with tolerance specifications can be checked by "GO" and "NOT GO" gauges.
• These gauges represent the limit sizes of the workpiece, as per the specified product tolerances.
• A "GO" gauge represents the maximum material condition of the product and conversely, a "NOT GO" gauge represents the minimum material condition.

Classification of plain gauges - They are classified:

• According to their type

1. Standard gauges
2. Limit gauges

• According to their purpose  

1. Workshop gauges
2. Inspection gauges
3. Reference or master gauges

• According to the form of the tested surface

1. Plug gauges for checking holes
2. Snap and ring gauges for checking shafts

• According to their design

1. Single-limit and double-limit gauges
2. Single-ended and double-ended gauges
3. Fixed and adjustable gauges.

• Both ring and plug gauges are available in two designs, ‘GO’ and ‘NO-GO’.