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D'oh! I never worked on the 262; the Navy didn't use them much and none of them ever passed through the Cal Lab at the shipyard here in the late 60s through '74. It does look like the 269 (except for the fact it says "262" in large print - which I overlooked!).

Most of the testing on the waterfront specified the 269, largely because of the much greater sensitivity on DC volts (100K vs. 20K ohms per volt). And of course, the 269 looks "better" than any 260.

You're right, of course, about being careful what you're measuring before connecting the meter. Most of the multimeter repairs I had to make were to replace the Rx1 and Rx10 range resistors. Guys on the waterfront would check continuity and then turn on the power to check voltages - without doing something TERRIBLY important....

I liked the AN/PSM-4 Series C and later: some genius changed the circuitry slightly and relocated these two resistors to the battery compartment so they could be replaced without taking the meter apart!

<blockquote data-quote="Beetle" data-source="post: 433103" data-attributes="member: 1066">D&#039;oh!&nbsp; I never worked on the 262; the Navy didn&#039;t use them much and none of them ever passed through the Cal Lab at the shipyard here in the late 60s through &#039;74.&nbsp; It does look like the 269 (except for the fact it says &quot;262&quot; in large print - which I overlooked!).&nbsp;Most of the testing on the waterfront specified the 269, largely because of the much greater sensitivity on DC volts (100K vs. 20K ohms per volt).&nbsp; And of course, the 269 looks &quot;better&quot; than any 260.&nbsp;You&#039;re right, of course, about being careful what you&#039;re measuring before connecting the meter.&nbsp; Most of the multimeter repairs I had to make were to replace the Rx1 and Rx10 range resistors.&nbsp; Guys on the waterfront would check continuity and then turn on the power to check voltages - without doing something TERRIBLY important...<img src="https://cdn.jsdelivr.net/joypixels/assets/8.0/png/unicode/64/1f617.png" class="smilie smilie--emoji" loading="lazy" width="64" height="64" alt=":whistle:" title="Whistling&nbsp; &nbsp; :whistle:"&nbsp; data-smilie="29"data-shortname=":whistle:" />.&nbsp;I liked the AN/PSM-4 Series C and later:&nbsp; some genius changed the circuitry slightly and relocated these two resistors to the battery compartment so they could be replaced without taking the meter apart!</blockquote>

[QUOTE="Beetle, post: 433103, member: 1066"] D'oh! I never worked on the 262; the Navy didn't use them much and none of them ever passed through the Cal Lab at the shipyard here in the late 60s through '74. It does look like the 269 (except for the fact it says "262" in large print - which I overlooked!). Most of the testing on the waterfront specified the 269, largely because of the much greater sensitivity on DC volts (100K vs. 20K ohms per volt). And of course, the 269 looks "better" than any 260. You're right, of course, about being careful what you're measuring before connecting the meter. Most of the multimeter repairs I had to make were to replace the Rx1 and Rx10 range resistors. Guys on the waterfront would check continuity and then turn on the power to check voltages - without doing something TERRIBLY important...:whistle:. I liked the AN/PSM-4 Series C and later: some genius changed the circuitry slightly and relocated these two resistors to the battery compartment so they could be replaced without taking the meter apart! [/QUOTE]

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