The wonderful world of gauge blocks

[Keith LongParticipant @keithlong89920]

Henry, have a look at Rotagrip's website. I've bought individual blocks from them in the relatively recent past and they weren't too expensive considering what they are.

[Henry BrownParticipant @henrybrown95529]

Posted by Keith Long on 27/10/2019 16:50:31:

Henry, have a look at Rotagrip's website. I've bought individual blocks from them in the relatively recent past and they weren't too expensive considering what they are.

Thank you Keith, I'll check them out after dinner…

[Mark RandParticipant @markrand96270]

Cromwell.co.uk are very reasonably priced for individual blocks. A thing I discovered to my chagrin after ordering a couple from Cutwell and finding that they are on 10 days delivery after they'd been paid.

 

Edited By Mark Rand on 27/10/2019 17:22:48

[Henry BrownParticipant @henrybrown95529]

Posted by Mark Rand on 27/10/2019 17:21:57:

Cromwell.co.uk are very reasonably priced for individual blocks. A thing I discovered to my chagrin after ordering a couple from Cutwell and finding that they are on 10 days delivery after they'd been paid.

Edited By Mark Rand on 27/10/2019 17:22:48

Cheers Mark, we have a Cromwells in Worcester, I'll try them also…

[Howard LewisParticipant @howardlewis46836]

In the old days, it used to be said that a Fitter could cut to within 0.005" (0.127 mm ) with a hammer and chisel.

There is a Cornish beam engine carrying an insert in the Piston Rod that is hardly visible. It was inserted Many Many years ago, by a fitter, who probably had no access to a lathe, (and if if he had, would have had to use callipers to measure the sizes, by feel ) A masterpiece of work with a file and emery!

Howard

[Nigel McBurney 1Participant @nigelmcburney1]

I have a Rabone 6 inch steel rule, ex gov 1959.reading the above posts about dimensioning,how about the engraving on this rule one side has divisions istarting in 20ths of an inch,fair enough and going down to 100 ths of an inch,qite difficult to read with engraved lines at ten thou apart,on the other edge its divided in 12 ths 24ths, 48ths and 96ths of an inch ,again in normlal conditions virtually impossible to read accurately. I have never used any of these divisions or seen any reason why 12ths to 96 ths would be used,the only place I have seen where multiples of a dozen is used is small angle,eg taper pins and taper keys at 1 in 96 ratio. Any ideas ?

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