Screw Plug Gauges (THREAD PLUG GAUGES)

GO OR Not Go Screw Plug Gauges are manufactured to the latest British, American and International standards. Most common thread forms are:

ISO metric, UN (unified), Whitworth (BSF, BSW), Pipe (BSP to ISO228) B.A., BSC (cycle) Aeronautical (MJ, UNJ), wire insert, Acme, Stub Acme, Trapezoidal, Buttress, Rd (round), Pg, NPSI, NPSF, NPSM

Screw Ring Gauges (THREAD RING GAUGES)

Go or Not Go solid Screw Ring Gauges manufactured to the latest British, American and International standards. Most common thread forms are:

ISO metric, UN (unified), Whitworth (BSF BSW), Pipe (BSP to ISO228) B.A., BSC (cycle), Aeronautical (MJ, UNJ), wire insert, Acme, Stub Acme, Trapezoidal, Buttress, Rd (round), Pg, NPSI, NPSF, NPSM,

In ISO metric threads the various classes of external threads are 4h, 6g and 8g, In Unified threads the various classes of external threads are 1A, 2A and 3A. Whitworth and B.A. the various classes of thread are Close, Medium and Free,

Plain Plug /Ring Gauges

GO OR NOT GO Standard Plain Plug Gauges/ Ring Gauges / Setting Ring Master gauges are available in the following sizes:

Plain Plugs are available in Steel as standard. Carbide and Hard Chrome Plated are available on request. Customised sizes, extra lengths, depth steps and counter bores are also available where practical.

OD Master Gauge (For Dial Snap Gauges)

As per your requirements

Spline Gauges 

Mercury provides a full range of Spline Ring and Plug gauges in order to meet your quality specifications.

Please Note: Special Gauges as per your Drawings.