In the photo I see a very small base, not much larger than the jack body, with no holes for bolts or even a likely place to add them.

thats true, but my toolmaker mind looked at it and jumped immediately to a strap or something fabbed to bolt it down. you are right they did not make a good provision for bolting it down if the finished product is as shown

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1982 300CD Turbo (Otis, "ups & downs") parts for sale
2003 TJ with Hemi (to go anywhere, quickly) sold
2001 Excursion Powerstroke (to go dependably)
1970 Mustang 428SCJ (to go fast)
1962 Corvette LS1 (to go in style)
2001 Schwinn Grape Krate 10spd (if all else fails)

I have one of those old Buda testers that look like a jack,been working great since WW2 the gauge is still good i tested it against a new Caterpillar guage a couple of years ago and it was right on the money. If you cant bolt it down sometimes i just grab it in the bench vice.For a filter mine has sort of a screen in the little cap where you fill it, i usually filter it thru a paper towel when i fill it. one thing i did do,was to drill and tap a small hole so i could vent it while filling as it was very slow to fill,much better now. My $.02 Don

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Red Green "This is only temporary,Unless it works!"

97 E300D 157000 miles
87 300TD ?141k? miles

I use mine mainly for checking the spray pattern of gasoline injectors now. It has seen much use in the past for Benz and off road diesels.