{"id":10090,"date":"2013-10-25T07:07:40","date_gmt":"2013-10-25T11:07:40","guid":{"rendered":"http:\/\/scruss.com\/blog\/?p=10090"},"modified":"2013-10-25T07:07:40","modified_gmt":"2013-10-25T11:07:40","slug":"resurrecting-a-fine-old-meter","status":"publish","type":"post","link":"https:\/\/scruss.com\/blog\/2013\/10\/25\/resurrecting-a-fine-old-meter\/","title":{"rendered":"Resurrecting a fine old meter"},"content":{"rendered":"<p>I picked up a fine-looking ex-Forces <a href=\"http:\/\/www.simpson260.com\/635\/bach-simpson_635.htm\">Bach-Simpson 635<\/a> multimeter from <a href=\"http:\/\/www.activesurplus.com\/en\/\">Active Surplus<\/a> the other week.<\/p>\n<p><a href=\"http:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2013\/10\/2013-10-24-22.16.46.jpg\"><img loading=\"lazy\" decoding=\"async\" alt=\"Simpson Canada 635\" src=\"http:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2013\/10\/2013-10-24-22.16.46-768x1024.jpg\" width=\"604\" height=\"805\" \/><\/a>After opening it up and cleaning out all the corroded battery gunge, it cleaned up pretty well:<\/p>\n<p><a href=\"http:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2013\/10\/2013-10-24-22.11.12.jpg\"><img loading=\"lazy\" decoding=\"async\" alt=\"The guts of a Simpson Canada 635\" src=\"http:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2013\/10\/2013-10-24-22.11.12-768x1024.jpg\" width=\"604\" height=\"805\" \/><\/a><\/p>\n<p>The needle would only go about \u00e2\u2026\u2013 full range, though. Carefully opening up the front showed that the corrosive goo had got into the meter movement itself:<\/p>\n<p><a href=\"http:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2013\/10\/2013-10-24-21.44.03.jpg\"><img loading=\"lazy\" decoding=\"async\" alt=\"Corrosion inside meter core\" src=\"http:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2013\/10\/2013-10-24-21.44.03-1024x768.jpg\" width=\"604\" height=\"453\" \/><\/a>Since the meter was pretty much useless as is, I carefully scraped away at the green gunge on the stator. This freed up the moving coil, so the meter now works pretty close to how it should. Clock that dial!<\/p>\n<p><a href=\"http:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2013\/10\/2013-10-24-22.23.39.jpg\"><img loading=\"lazy\" decoding=\"async\" alt=\"Clock that dial!\" src=\"http:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2013\/10\/2013-10-24-22.23.39-1024x624.jpg\" width=\"604\" height=\"368\" \/><\/a><a href=\"http:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2013\/10\/2013-10-24-22.28.35-e1382670528289.jpg\"><img loading=\"lazy\" decoding=\"async\" alt=\"Simpson 635 Armed Forces Identity Plate\" src=\"http:\/\/scruss.com\/wordpress\/wp-content\/uploads\/2013\/10\/2013-10-24-22.28.35-e1382670528289-1024x363.jpg\" width=\"604\" height=\"214\" \/><\/a>I took the HV back off the meter. There&#8217;s no way I&#8217;m going near 6 kV with this meter. Anything over 12 V makes me worried \u00e2\u20ac\u00a6<\/p>\n","protected":false},"excerpt":{"rendered":"<p>I picked up a fine-looking ex-Forces Bach-Simpson 635 multimeter from Active Surplus the other week. After opening it up and cleaning out all the corroded battery gunge, it cleaned up pretty well: The needle would only go about \u00e2\u2026\u2013 full range, though. Carefully opening up the front showed that the corrosive goo had got into [&hellip;]<\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_jetpack_newsletter_access":"","_jetpack_dont_email_post_to_subs":false,"_jetpack_newsletter_tier_id":0,"_jetpack_memberships_contains_paywalled_content":false,"_jetpack_feature_clip_id":0,"_jetpack_memberships_contains_paid_content":false,"footnotes":"","jetpack_publicize_message":"","jetpack_publicize_feature_enabled":true,"jetpack_social_post_already_shared":true,"jetpack_social_options":{"image_generator_settings":{"template":"highway","default_image_id":0,"font":"","enabled":false},"version":2},"jetpack_post_was_ever_published":false},"categories":[2],"tags":[2581,2675,2387],"class_list":["post-10090","post","type-post","status-publish","format-standard","hentry","category-goatee-stroking-musing-or-something","tag-active_surplus","tag-corrosion","tag-multimeter"],"jetpack_publicize_connections":[],"jetpack_featured_media_url":"","jetpack_shortlink":"https:\/\/wp.me\/pQNZZ-2CK","jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/posts\/10090","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/comments?post=10090"}],"version-history":[{"count":1,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/posts\/10090\/revisions"}],"predecessor-version":[{"id":10103,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/posts\/10090\/revisions\/10103"}],"wp:attachment":[{"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/media?parent=10090"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/categories?post=10090"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/scruss.com\/blog\/wp-json\/wp\/v2\/tags?post=10090"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}