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- 8***0 (1583)- Feedback left by buyer.Past yearVerified purchaseGreat calculator at a great value!! Works greats and was shipped very fast!! Thank you!!
- flyingcolorsairparts2014 (5297)- Feedback left by buyer.More than a year agoVerified purchaseGood buyer, prompt payment, valued customer, highly recommended.
- senmiu (165)- Feedback left by buyer.Past monthVerified purchaseHope to deal with you again. Thank you.
- plc-original-certified (26)- Feedback left by buyer.Past 6 monthsVerified purchaseHope to deal with you again. Thank you.
- qkmallllc_1 (36751)- Feedback left by buyer.More than a year agoVerified purchaseGood buyer, prompt payment, valued customer, highly recommended.
- nadacohe_3 (1085)- Feedback left by buyer.Past 6 monthsVerified purchase(•¿•)YOU MAKE(•¿•)BUYERS(•¿•)LOOK GOOD(•¿•)
Reviews (16)

Dec 28, 2020
Solid DVM Choice
1 of 1 found this helpful Older design DVM but still a solid bench-top performer. Arrived working correctly and within calibration. Excellent 4 wire ohms performance, good thermal stability. Newer color LED meters look prettier but the HP3478A is more likely to be working years from now.

Jan 14, 2024
Basic DMM with data port
Good basic digital meter. DMM accuracy is good. Voltage reads within 10 mV of a 5 volt standard.
Serial data link is reliable. The supplied SW is worthless for Windows 10 or higher. Arduino C code on GitHub is available to decode the TP4000’s serial data. With that, the TP4000 is a useful data logging DMM.

May 09, 2017
Time Nuts Technical Overview
Scholarly presentation at a modest technical level of timekeeping using atomic clocks. Although 20 years old the material remains fully valid.