supply of set of gauges.set of gauges.,gauge (go & nogo) for bent link u-gap - 78 mm (gauge for screw coupling) requiredsize: go - 77 mm & nogo - 85 mm ref. drg. no. rdso - sk - 79068 alt-08 & sk - 99002 material - toolsteel, is 3 748/90 hardness - 50/55 hrc. supply with calibration certificate - valid for min. 01 year issuedfrom nabl approved lab [ warranty period: 30 months after the date of delivery ] ] , profile gauge with - 15 mm. adjustable projection for root of the hook near the point ofconta ct with bent link (gauge for draw hook) [ warranty period: 30 months after the date of delivery ] ] , gauge for hole on straight link. 61 mm dia hole. required size - nogo - 63.0 mm (flat type ) ref. drg. no. rdso - sk - 79068 alt-08 & sk - 99002 material - tool steel, is 3748/90 hardness - 50/55 hr c. supply with calibration certificate - valid for min. 01 year issued from nabl approved lab [ warranty p eriod: 30 months after the date of delivery ] ] , gauge for hole on straight link. 47 mm dia hole. required size - nogo - 49.0 mm (flat type ) ref.drg. no. rdso - sk - 79068 alt-08 & sk - 99002 material - tool steel, is 3748/90 hardness - 50/55 hrc . supply with calibration certificate - valid for min. 01 year issued from nabl approved lab [ warranty pe riod: 30 months after the date of delivery ] ] , k- thread profile gauge (ring gauge type) for screw. size - 55 x 6.35 mm - k/thread. go& n ogo gauge. wear limit - 1 mm ref. drg. no. rdso - sk - 79068 alt-08 & sk - 99002 material -stainless stee l &hardened. supply with calibration certificate - valid for min. 01 year issued from nablapproved lab [ w arranty period: 30 months after the date of delivery ] ] , k- thread profile gauge (plug gauge type) for trunnion - lh/rh. size - 55.635 x 6.35 mm -d/t hread. go & nogo gauge. wear limit - 1 mm ref. drg. no. rdso - sk - 79068 alt-08 & sk - 99002 material - stainless steel & hardened. supply with calibration certificate - valid for min. 01 year issued from nabl a pproved lab