where do you get replacement tape

Instead of paying a $1 per strip, I use HVAC foil tape I had laying around the house. Only $10 for a 150-feet roll ($8 at HD/Lowes). Something like this https://www.amazon.com/Homemory-Aluminum-Inches-Yards-Furnace/dp/B01M7S4APP/ref=sr_1_7?s=industrial&ie=UTF8&qid=1506079959&sr=1-7&keywords=hvac+foil+tape

Can a reading be taken on the end of a 5/8" dia shaft, or do you have to put the reflective tape on the side of the shaft and aim laser from the side?

You can make a "flag" out of reflective tape and wrap it around the shaft, then all you need to do is aim the tach at the flag (not the center of the shaft). If you're still having trouble, try holding a 3x5 note card with it's edge aligned (parallel) with the center line of the shaft so that only 1/2 of the shaft is visible to the device, then it will only be able to measure the flag one time per rotation and it won't accidentally pick up the flag's reflection twice as it goes around.

how is the battery life when not in use... I had one similar to this one and if i left the battery in it would kill them. anyone else have this prob?

I received mine in December 2018. I use it infrequently. Up till now (about six months) the battery is still good and working well.

I know this unit can read off the RPM, but does it also count a number of revolution?

It does not count the total number of revolutions. You would have to do the math (RPM x minutes). This is a basic unit that shows a minimum and maximum value (RPM) obtained during a reading. It also requires reflective tape to be applied on the shaft (or rotating object). It's not a unit that you can just point and shoot and come up with various readouts.

20713a Digital Tachometer Non Contact Laser Photo 99 999 Rpm

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Description

🎯 Hit your RPM targets with laser precision—because every revolution counts!

ALL INCLUSIVE KIT - Comes with batteries, reflective tape, and a protective case—ready to deploy wherever your projects take you.
PINPOINT PRECISION - Experience ultra-accurate RPM readings with ±0.05% margin of error—never second guess your data again.
LASER FOCUSED SPEED - Measure rotational speeds up to a staggering 99,999 RPM instantly with high-speed laser technology.
USER CENTRIC DESIGN - Large, easy-to-read LCD screen and ergonomic handheld form factor for effortless operation on the go.
NON CONTACT CONVENIENCE - Get precise measurements from 2 to 20 inches away—no need to stop or touch the machinery.

The Neiko 20713A Digital Tachometer is a compact, non-contact laser device designed for ultra-precise RPM measurement up to 99,999 revolutions per minute. With ±0.05% accuracy and a 20-inch effective range, it delivers instant readings on a large LCD screen. Ideal for automotive, industrial, and mechanical diagnostics, it includes reflective tape, batteries, and a protective case for professional-grade performance anywhere.

Specifications

ASIN	B000I5LDVC
Best Sellers Rank	#99,293 in Industrial & Scientific ( See Top 100 in Industrial & Scientific ) #132 in Motion, Speed & Force
Brand	Neiko
Brand Name	Neiko
Country of Origin	USA
Customer Reviews	4.3 out of 5 stars 2,559 Reviews
Global Trade Identification Number	00837013207139
Included Components	Digital Tachometer
Item Dimensions	15.9 x 10.8 x 4.4 Centimeters
Item Weight	181 g
Item dimensions L x W x H	15.9 x 10.8 x 4.4 Centimeters
Manufacturer	Ridgerock Tools Inc.
Material	Plastic
Material Type	Plastic
Model Number	20713A
Net Quantity	1.0 Count
Number of Items	1
Part Number	20713A
UPC	837013207139
Unit Count	1.0 Count

Reviews

D**.

Great Tachometer

It works great as expected and for the price it was worth it nice case that it comes in.

6.05.2026

D**.

Excelente producto

Fácil de usad

29.08.2020

D**K

Good buy

Works great

6.12.2025

C**N

worked fine

couldnt find my other one, so i bought another, works fine, then i found my other one so have two now work fine,

24.03.2026

R**.

Very cheap materials

Very cheap materials. Bad quality

1.12.2020

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