On 8/1/2017 10:59, P. J. Alling wrote:
I appreciate the advice, but I haven't needed to do such fine
measurement since I stopped rebuilding air cooled VW engines, some would
argue that it wasn't necessary even then, but some are idiots.
I'm really hoping that someone on the list just has this information
hidden away somewhere, because I just can't justify buying a measuring
device for a single purpose, and in this particular case Google is not
my friend.
I'll bet there's a NAPA or CarQuest parts store nearby that has them &
if you take the lens there they'll measure it for you. Especially if
it's one of the stores that still has a machine shop in the back.
On 7/31/2017 8:59 PM, Paul Stenquist wrote:
A vernier caliper can achieve a measurement of the inside diameter
accurate to a tenth of a mm or better. It's an inexpensive measuring
tool that I wouldn't be without.
Paul via phone
On Jul 31, 2017, at 8:54 PM, P. J. Alling
<[email protected]> wrote:
I don't remember if I ever posted this to the list, but I've been
trying to find a lens hood for this lens, since I acquired it many
years ago.
When it was originally released sometime in the late 70's early 80's
it was shipped with a lens hood, and has a large diameter front
filter ring, which is unmarked, and why would it be? After all,
those front filters were and are extremely expensive, and it does
take rear filters in a much less expensive 30.5 mm diameter of which
I fortunately have the full set.
However the lens hood disappeared sometime before it came into my
possession.
Given the cost of a decent lens hood in 95mm diameter or greater,
(I've measured the inside diameter and it might be 101mm), and the
difficulty with returning an inexpensive lens hood to China, I'm
loath to order one that might not fit.
The slip on plastic lens cover has an inside diameter of 106mm so
112mm the next common size up from 101mm is out.
Unfortunately my tools and aren't very accurate for measuring the
inside diameter of the lens threads, (simply a metal rule in inches
and metric), and there's more than enough slop for the diameter to be
anything between 95mm to 103, the later of which would be just a
nightmare to find.
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