Metrology 1 sem

____________ Do not indicate actual value of the inspected dimension

• Vernier caliper
• micrometer
• Gauges
• Steel rule

Classification Of Gauges according To The Type

• Standard & Limit gauge
• Reference or Master gauge
• Snap gauge & Ring gauge
• Fixed & Adjustable gauges

Limit gauges are made to the _____________of the work to be measured

• limit size
• fit size
• actual size
• basic size

Classification Of Gauges not according to the design

• Single limit & Double limit gauges
• Single ended & Double ended gauges
• Fixed & Adjustable gauges
• Triple limit & multiple limit gauges

For checking shafts, the gauge used is _________.

• Plug gauge
• Ring gauge
• Profile gauge
• Thread gauge

Incase of hole, 'NO Go' gauge corresponding to _________.

• High limit of size
• basic size
• actual size
• low limit of size

Plain ring gauge checks

• plain cylindrical shafts
• threaded shafts
• tapered shafts
• none

ELINVAR has

• 46% nickel
• 38% nickel
• 42% nickel
• 36% nickel

INVAR

• 46% nickel
• 38% nickel
• 42% nickel
• 36% nickel

Slip gauges are finished by ______________

• 20x30mm
• 10x30mm
• 10x20mm
• 20x40mm