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49 12

Gauges for Checking Sizes of Conduit

(made of high carbon, high chrome die steel
      duly hardened and ground) 
A. Gauges for maximum outside diameter as per  
    figure 1 of IS: 9537 (part III) and 
    figure 2 of IS: 9537 (part III)
             I. 16 mm 
             II. 20 mm 
             III. 25 mm 
             IV. 32 mm 
             V. 40 mm 
             VI. 50 mm 
             VII. 63 mm 
B. Gauges for minimum outside diameter as per
    fig. 2 of IS: 9537 (part III) and 
    fig. 1 of IS: 9537 (part II)
 
         I. 16 mm 
         II. 20 mm 
         III. 25 mm 
         IV. 32 mm
         V. 40 mm 
         VI. 50 mm 
         VII. 63 mm 
C. Gauges for checking inside diameter as per 
    fig. 3 of IS: 9537 (part III) - 1983
          I. 16 mm (for any one class) each 
          II. 20 mm (for any one class) each 
          III. 25 mm (for any one class) each 
          IV. 32 mm (for any one class) each 
          V. 40 mm (for any one class) each 
          VI. 50 mm (for any one class) each 
          VII. 63 mm (for any one class) each 
D. Ring gauges for maximum outside diameter of 
    socket end of conduit as per table 2 of    
    Amendment No. 1 (March 2002) of IS: 9537
    (Part II) 1983
          I. 16 mm 
          II. 20 mm 
          III. 25 mm 
          IV. 32 mm 
          V. 40 mm 
          VI. 50 mm 
          VII. 63 mm 
E. Go – No Go Gauges for inside diameter (both
    min & max) and length of socket end of
    conduits as per table 2 of Amendment No. 1
    (March 2002) of IS: 9537 (Part III) 1983
          I. 16 mm 
          II. 20 mm 
          III. 25 mm 
          IV. 32 mm 
          V. 40 mm 
          VI. 50 mm 
          VII. 63 mm