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Unfamiliar dimensional call-out. Help needed. 1

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CanosSSCS

Mechanical
Joined
Sep 16, 2020
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35
Location
US
Hello,

I'm trying to understand the location of the thru holes on the attached schematic. The image shows a mounting method for a level sensor. Any help is greatly appreciated.

level_sensor_mounting_rrpw80.jpg
 
B.C. = bolt circle with either a 1.50 inch or a 38 mm diameter.
 
Not the correct way to dim.
But, 1.50 eq sp means the 4 holes are eq sp on that dia, 90 deg apart. But, does not show the orientation to the part.

ctopher, CSWP
SolidWorks '19
ctophers home
SolidWorks Legion
 
A lot depends on what is 1.50"/38 B.C. and what it shows. You may want to post it too if you are looking for help at understanding the location of those holes.
 
A number in parentheses seems to be either mm or a quantity, depending on where it is.

A number after a "/" seems to be either mm or a quantity, depending on where it is.

So basically, good luck with your guess.
 
Ripped from the files of "What Not To Do (Drafting Edition)...
 
Are there any more views on that drawing?

Type 61 sounds enough like Code 61 to make me wonder.

Type 61 looks to be a "standard" in industries that use pipe for light duty structural service.
Not much like your image. Countersunk bolt holes for a start.
 
Old school prior to GD&T. For 1/4 soc hd screws. Old timers held the True position required for assembly. 3Ddave is correct. Being it was on a diameter.
 
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